Since January 1, 2022, YONEX has reached a four -year strategic cooperation with the China tennis Association, becoming the only official ball brand of the Chinese tennis Association professional event and the official line service brand of the official competition of the Chinese tennis Association.Or offers ball and threading services in the organized events.

Since YONEX entered the Chinese market in 2015, it has provided support for the progress of China's tennis industry. It not only sponsored the WTA Zhuhai Elite Competition, ATP Shanghai Masters and other large -scale events, but also provided help in the development of the youth tennis career.Many Chinese outstanding tennis players have tried their best to contribute to the development of Chinese tennis.At the same time, YONEX provides excellent products and technology for the Chinese market, and has been well received by tennis enthusiasts and professional players.

The cooperation with the China tennis Association is another important milestone in YoneX based on the Chinese market.In the next National Games cycle, YONEX will work with the China tennis Association to continue in international competitions hosted by ITF, WTA, ATP, the tennis group championships and National Games in China, youth competitions at all ages and youth competitions, and in all ages, as well asMore in -depth cooperation in other major tennis events.

I look forward to pushing China's tennis career to a new height through hand in hand.

1. What is the role of streaming shoes

Creek shoes are a category of sneakers. Outdoor streaming is generally wearing stroke shoes.

The role of streaming shoes is mainly to facilitate Outdoor tracing through the stream. This kind of shoe generally uses fast -drying fabrics, water transmittance, and anti -skid soles design. It has excellent adhesion and grip capacity.The safety and comfort of the toes.

Second, what quality of good stream shoes should be available

Xixi is a very interesting outdoor sports. Generally, the stream of traces must be worn. There are many products on the market, and the quality is uneven.

1. Excellent drainage sand and dysfunction and quick drying

The stream shoes are often out of water and water. This requires the drainability of the shoes to drain well, and the sediment can be discharged with the water to reduce the wear of the footsteps. Now there are some water and land amphibious shoes.The gang is used in large -scale mesh to achieve the function of fast drainage. At the same time, some materials that hate or fast -drying are also used to achieve the effect of fast drying.At the same time, some gaps can be designed at the shoe gang or the roots of the shoe to eliminate sandstones.

2. Good anti -slip

Generally speaking, most of the water channels are going through the stream. There may be different shapes of stones in the water channel. In different seasons, they may expose the water surface or hidden at the bottom of the water.It is covered with moss and is slippery and difficult to stand. This first requires that the streaming shoes must have excellent non -slip properties, especially after humidity, it can still have a good skid effect.Most Vibram shoes are confirmed that they are not suitable for streaming, because the streaming shoes do not require particularly abrasion resistance. On the contrary, some soft rubber soles will have better effects, and sandals or walking shoes will have outstanding performance.When walking on the naked rock surface in some V -type canyons, sometimes its slope may exceed 40 or 50 degrees.The sole is required to have a large contact area with the rock surface to increase friction.In addition to the design of the sole pattern, this friction is mostly designed with patterns to increase the grip performance of complex terrain.

3. Independent shock absorption

It is inevitable to jump around between the stones or walk in the light river bed in the stones.It is uncomfortable to wear a pair of high -tech rubber boots in the height of the cobblestone water.

4. The fit and protection of shoes and feet

During the stream, it is full of fun and excitement than encountering some waterfalls. Those who have gone more than three meters can be considered waterfall. The low waterfalls can be passed through equipment or even bare hands.The climbing characteristics, in addition to the good friction effect, the more pointed toe design of the pointed rock Climbing shoes can find the support point on the slippery rock surface, and the harder toe will also protect the toes to protect the toes.It is helpful. During the stream, most of the damage to the feet will come from the underwater environment of unknown situations. If you accidentally insert your feet or insert your feet into the stone seam or the stone roll, it will cause the foot injury, soIt is also necessary for the protection of the feet and ankles. This requires the protection of the feet that can be different from Outdoor sandals. The streams have all -inclusive design and non -all -inclusive type.Generally speaking, the all -inclusive type can cling to the feet and protect the feet, and evenly wrap the feet.

Ancient Chinese celestial observation instruments

armillary sphere

Age: Western Han Dynasty

Function: Hun Tianyi is the general name of Hun Yi and Xiangxiang.Hun instrument is a kind of instrument that measures the sphere of celestial body, and the image is an instrument used to demonstrate the phenomenon in ancient times.

Existing location: Nanjing Zijin Mountain Observatory

Brief

Dynasties: Yuan Dynasty

Function: Measure the location of the celestial bodies.The structure and use of Jianyi are simpler than Hunyi, and except near the Arctic Star, the entire sky is unobstructed, so it is called Jianyi.

Existing location: Nanjing Zijin Mountain Observatory

Ritual

Age: Yuan Dynasty

Function: Observation instruments with direct projection methods are very intuitive and convenient.

Existing location: Beicheng Star Watching Terrace, Zhaocheng Town, Dengfeng City, Henan Province

Daybish

Dynasties: spring and autumn Period

Function: It is the instrument when observing the Japanese filmmark. It is mainly based on the position of the day shadow to specify the time or the number of times at that time. It was a more commonly used chronograph instrument in ancient my country.

Existing location: National Museum

Watt

Dynasties: 20th century BC

Function: It is a astronomical instrument that measures the length of the daily shadow. It consists of two components: "Gui" and "table".

Celestial body

Dynasties: Qing Dynasty

Function: The ancient name of "Xiangxiang" was an instrument used to demonstrate the phenomenon in ancient my country.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Discipline

Dynasties: Qing Dynasty

Function: Also known as the six -point meter or distance meter, it mainly uses it to determine the angle distance between 60 degrees between the celestial bodies and the diameter of the sun and the moon and the moon.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Quadrant

Dynasties: Qing Dynasty

Role: Astronomers usually use quarrels to measure the meridian height of the sun and planets, and then determine the star coordinates of the latitude, the zodiac angle and the observation location.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Equatorial latitude and latitude instrument

Dynasties: Qing Dynasty

Function: It is mainly used to detect the red meridians and redtties of celestial bodies.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Huangdao Jingwei

Dynasties: Qing Dynasty

Function: It is mainly used to measure the eczema and latitude of the celestial bodies and measure the twenty -four Solar terms.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Horizer Jingwei

Dynasties: Qing Dynasty

Function: It is mainly composed of four parts of the ground, the elephant limited ring, the column, and the spare mirror, which is used to measure the horizon coordinates of the celestial bodies.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Horizon

Dynasties: Qing Dynasty

Function: During observation, the lines of the lines at both ends of the celestial body and the horizontal surface are perpendicular to the center on the plane, and the horizon can be set.

Existing location: No. 138, Xizhimenwai Street, Xicheng District, Beijing

Dynasties: Qing Dynasty

Function: It is one of the eight large copper cast astronomical instruments made in the Qing Dynasty and an important astronomical observation instrument in ancient my country.It is mainly used to determine the scales of the celestial bodies, rookie, and true sun.

Existing location: Beijing Guguanxiangtai

Water Yunyi Elephant Channel

Dynasties: Northern song Dynasty

Function: Large automated astronomical instruments that are driven by leakage hydraulic, which integrates astronomical observations, astronomy demonstrations and time -reporting systems.

Existing location: China History Museum

Astronomical Telescope

Astronomical Telescope choice

getting Started

The brand suffixes such as Star Tron, Biguan and other brands are basically an entry-level Telescope. The price is 500-2000 yuan.The sky body is more suitable for beginners.

intermediate

The price of Cinda Xiaohei, Sirius painter, Mide NG90, etc., the price is 2000-5000 yuan. The optical performance and the stability of the bracket are not bad. Generally, it has an automatic star search function, which is suitable for amateur astronomical enthusiasts with some economic conditions.

advanced

Star Tron C8, 8SE, Cinda SC8, 16 -inch DOB and other Telescopes, the price is more expensive, more than 10,000 yuan, it is a weapon for observing deep space such as planets and nebulas, suitable for fever and professional astronomical enthusiasts., Worker.

[More & gt; & gt;]

Astronomical Telescope accessories

eyepiece

In addition to the effect of astronomical Telescope, the Eyepiece cannot be ignored except for most of the objective mirrors or main mirrors.Choose proper eyepiece to use the performance of the Telescope as much as possible.

Sun filter

Based on parallel plane glass or synthetic resin, the filter plate with metal steaming electricity is installed in front of the material mirror, reflective lens barrel, or Schmida Casserin, as a light reduction.You can use large -caliber observation and do not hurt your eyes, but you should pay attention to the cutting of the filter board when cutting.

Filter

Planet observation with the filter with appropriate colors can increase the contrast on the surface of the planet, so that we can see more surface details.When observing the moon, medium -density filter can reduce the light of the moon, so that we can observe comfortably.

Baro mirror

Putting Baro mirror between the objective mirror and the eyepiece can increase the magnification.The usual Baro mirrors increase the focal length of the object mirror by double or 3 times to 5 times.This is a convenient accessory, but the cheap Baro mirror may affect the image.

Spare prism

The sclineing prism is to reflect the Telescope light shaft of the long mirror by 9 0 degrees with a prism.The larger Telescope will use the reflex mirror surface. One is lighter, and the second is better than the prism.

Star -seeking mirror

It is used to facilitate observer to find a low -twice Telescope used when observing the celestial bodies. First of all, it is necessary to adjust the Telescope with the light shaft of the star -seeking mirror to each other.Essence

Longitude and latitude instrument

It is a type that can move in horizontal and upper and lower directions freely.The structure and usage are very simple, but the tracking of the stars moved by the day and weekly movement is difficult. Two micro -movement rods are operated, otherwise the stars will run away from the field of vision.

Hoshino Equator Instrument

Tracking the celestial bodies that move due to the day and weekly movement, the simple method is to use the equatorial ceremony tablet, which is indeed much more convenient than the latitude and weft instrument.

The top ten astronomical Telescope in the world

1. Gana column large Telescope

The diameter of the mirror surface is 10.4 meters long, consisting of 36 custom mirror hexagonal components, and the installation requires accurate to a range of 1 mm.The establishment of this guy can be said to be burning money, and early investment is as high as $ 175 million.

2. Kak Telescope

Located on the top of Monakia, Hawaii, it is two exactly the same Telescope. They are composed of 36 mirror hexagonal components. The overall mirror diameter is 10 meters, each mirror diameter is 1.8 meters, and the thickness is only 10For centimeters, the mirror surface is highly accurate by active optical support system.

3. Large -scale Telescope in southern Africa

It is composed of 91 mirror hexagonal components. The overall mirror is actually effective in diameter of 10 meters.The Telescope can detect the weak light of the moon distance like a candlelight, and the Telescope was first put into use in 2005.

4. Hobbie Enley Telescope

It is composed of 91 mirror hexagonal components. Each mirror diameter is 1 meter, which is continuously sorted by a small computer control motor.The overall mirror diameter can reach 11 meters, and the actual available is only 9.2 meters.

5. Large dual -Tube Telescope

Large binocular Telescope is referred to as LBT, which is composed of two tightly adjacent 8.4 diameter Telescopes. They can work separately. When the merger work is like a single, larger Telescope.

6. 6 Telescope

The diameter of the Telescope is 8.2 meters, which is a optical/visual infrared Telescope. It has three characteristics: first, the mirror is thin, and the high -precision tracking can be achievedThird, the cylindrical observation room is used to automatically control ventilation and air filter to achieve the best conditions for the exclusion of heat flow.

7. The European Astronomical Observatory is a big Telescope interference instrument

Located on the mountains of Chile, Mount, Chile, consisting of 4 8.2 meters diameter Telescope, each one can operate separately, or forms a very large Telescope interference instrument.This combined astronomy observation can detect cosmic light 4 billion times more visible than the human body.

8. Gemini Telescope

The Telescope located in the northern hemisphere is coordinated with other Telescopes in Monakia, Hawaii. The Telescope located in the southern hemisphere is located on Mount Siro Parana, Chile.Place the Telescope in two hemispheres for easy observation of all -weather systems.

9. Multi -mirror Telescope

Located on Hopson Mountain, Tunson City, Arizona, it is an art -level building. It does not have the dome structure of the traditional observatory.Soon the Telescope cooled down, and then improved the observation efficiency.

10. Magellan I, II Telescope

Two Telescopes are 200 feet apart, located at the height of the Atkama Desert in Chile.The 6.5 -meter diameter mirror of the Telescope floats on a high -pressure oil film, and its friction is small, and even children can promote this 150 -ton Telescope.

[More & gt; & gt;]

Daily full -food glasses

What do you do

Its core part is a lens and must use a professional light reduction or light reduction film.The light reduction sheet has materials such as metal membrane, polycarbonate, polyester fiber soft tablets and other materials.The ideal Solar light reduction has a maximum transmission rate of 0.0032%(three in 100,000). At the same time, ultraviolet and infrared rays should be effectively filtered.

How to do

Materials: 1 scissors, several double -sided glue, 1 copper sheet paper, 1 floppy plate, 1 pencil

Cut the floppy disk and cut it with scissors into three parts;

Paper folding back for later use;

Draw a 20mm*38mm rectangle of 20mm*38mm.

Use scissors to buckle the interior, and stick a circle of double -sided glue four windows and four windows inside.

Then put the removing things in the soft disk; there is a trick here, first tear off the double -sided glue on the side, put the plate on the side without tearing the double -sided glue, keep the windows all overwritten.Stick up;

Turn off the double -sided glue on the other side and press the two sides to tighten them;

Properly trim the surroundings to facilitate beauty.

How much

Generally, about ten yuan.

Astronomical/Star Guanzi Software

1. Virtual Astronomy Museum (Stellarium)

Calculate the astronomical phenomenon of specified time.The virtual astronomy museum is a more commonly used Tool for astronomical lovers. It is an astronomical phenomenon used in a computer. We can adjust the time and place in it, and then predict the astronomical phenomenon of the day according to the orientation prediction or calculation. For example, you have an astronomical Telescope.You have already seen the moon, you want to find Saturn for a day, but how do we know if there are Saturn Jupiter in the past few days?Virtual Astronomical Museum can do it.

2. Star map

If the virtual astronomy museum is a software predicted before departure, then this star map is used to refer to the astronomical situation at the scene. This is an application on the mobile phone. Apple Android has to download.AR mode, you can use your phone directly to see the star or constellation above your head.

3,Spacengine

4D simulation universe software.Strictly speaking, it is a game, a "Spacengine" on Steam.This game is an astronomical simulator made by Russia's astronomer and programmers combined with massive astronomical real data. It can be said to be the 4D version of the virtual astronomy museum because it has 3D simulation space and VR mode. We can call it first or third.Traveling in the universe.We can not only see some details of the planet, but also some planet's data.

4. Skyview Free

Intuitive and rich information, SkyView allows you to easily start watching the stars; no Wi-Fi or experience search stars, constellations, planets, galaxies or satellites, arrows will guide you to move forward; point your device to the celestial bodies or constellations, and then click to understandIts name and key fact.

5. Skywiki -The World of Astronomy at a Glance

From the daily planet movement to the full food, everything is an astronomical figure; read the latest space news from the source of NASA, and check the daily astronomical photos with information titles; see the upcoming incident, from the moon phase and the meteor rain to the planet connection, and and connect the planet, and and the planet connection, and and the planet connection, and and the planet connection, and and the planet connection, and also connect to the planet, and and the planet connection, and also connect, and connect the planet, and and the planet connection, and connect, and connect the planets, and connect, and connect the planets, and and the planet connection, and and the planet connection, and connect, and connect the planet, and and the planet connection, and connect, and connect the planets, and and the planet connection, and and the planet connection, and and the planet connection, and connect the planet, and and the planet connection.Add them to their personal calendar.

6. Lunescope Moon Viewer

This beautiful, focusing tools suitable for those who want to remain consistent with the moon; observe the moon from your position, you can use a 3D perspective to rotate or move according to time; get daily rising and landing time, phase, track data, Crescent and visibility percentage.

On December 15, 2019, the "2019 China Economic Summit Forum and the Seventeenth China Economic Character Annual Conference" jointly organized by the "Economic" magazine, the Global Times, and the China Asian Economic Development Association was held in Beijing.

As a prestigious economic summit, the theme of this conference is "new economy, new development, and new pattern", which aims to tap the typical representatives of China's economic process.Yuyue Group has won the top ten China Economic Leading Enterprise Award for more than 20 years of industry status, innovative achievements, and economic contributions.

In 2019, the 70th anniversary of the founding of New China, Yuyue Medical has always stood on the front line of the great process of China's economy, and made a basic contribution to the operation of the huge gear of China's economy with technological research and development and model innovation.

Based on the in -depth understanding of the current status and national conditions in China, Yue Yue has continued to cultivate the innovative integration of technology and digitalization in recent years, while completing its own smart medical transformation while working together to jointly build a precise medical ecology.

As of 2019, the products and services of Yuyue Group have successfully covered a number of medical institutions and three hospitals across the country to fully help the implementation of China's hierarchical diagnosis and treatment policies and the transition of medical services.

The vision of Yu Yue in the field of AI medical care is greatly vision to land in the scene and practice.

In July 2019, the first batch of R & D teams of Yuyue Global production bases has settled, which means that the company's exploration of the company's exploration of lean manufacturing logic and production digital systems has achieved a new landing on the ground for many years.

In November 2019, Yuyue Medical passed the national recognition of the National Industrial design Center and the manufacturing single championship, which further enhanced the strength of high -end medical care.

Thanks to the achievements under the global strategy, the group can actively embrace changes in leading and participating in industry technological innovation.

In 2019, Yuyue Group continuously released a number of new domestic medical equipment including atomizer, oxygen -making machine, ventilator, etc. At the same time, the latest generation of AED -full double phase wave automatic except at the MIEDCA conference in November full double phase wave automatic body exceptRibling series M600.In order to more accurately solve clinical medical needs and accelerate import substitutions, the Group has continuously released heavy products such as the ONE Shadow smart Platform, the fourth -generation interventional product King Kong DSA, the cloud glue film scene solution, and I_SPACE1.5T intelligent magnetic resonance.

Relying on Wandong Medical, Parkson Medical, Primedic, Pu Meikang, Shangwei, Likang, Huayu, Jinzhong, Angeli, Jiefu Rou, Zhongyou and other huge brand maps, Yuyue Group successfully covered the entire health industry chainAll Links provide products and services for more than 110 countries and regions around the world from a global perspective.

Based on the advantages of technology and data, Yuyue Group has integrated the four major sectors of clinical medical care, home medical care, Internet medical care and good life.Through the upgrading of technology, the formulation of industry standards, the innovation of business models, and the integration of digital technology, Yuyue Group is constantly developing high -end medical manufacturing and industrial chain upgrades."Value.

1. Introduction to Boxi and Outdoor clothing companies

Pelliot Boji, founded in Beijing in 2012, is a brand new and natural Outdoor lifestyle brand. It is committed to bringing high -performance and high experience value to Outdoor enthusiasts.Pelliot Boji and inspired by natural things and natural aesthetics, focusing on the innovative design and research and development of Outdoor functions, and continuously launching technology -leading super -sports items.Long -term support for mountaineering communities, scientific examination expeditions, and research on outdoor sports in universities, Tsinghua mountaineering team designated Outdoor equipment brands, and Peking University Mountaineering Team designated Outdoor equipment brands.

Second, Boxi and Outdoor clothing brand strength

As the Chinese New Natural Outdoor Leading brand, Pelliot Boji and Polartec, Event, Cordura, Primaloft, Dermizax, Vibram, Polygiene, Recco, etc. have reached strategic partners. Ry Award Silver WinnerThe Asian Outdoor Industry Awards, Outside China Outdoor equipment Awards and other industrial prizes, and have the following technologies:

1. StormBreath waterproof and humid technology:waterproof index 100,000, blocking rainwater, dampness and breathability.

2. Stormshield Wind Shield Technology:Wind preventing cold, humidity and warmth.

3. Wormlock lock temperature technology:The constant temperature system and the temperature are long -lasting.

4. StormDay Speed Dry Technology:Cooling is fast and dry in high temperature and humidity.

5. P-Eryergy TECH heat storage technology:Kurzyin ion technology and efficient reflection of human thermal energy.

3. Bobs and Outdoor clothing-win-win cooperation

(1) Cooperation brand:Boxi and Pelliot

(2) Product series:

1. Performance

In response to the variable Outdoor environment, join hands with multiple top Outdoor technology in the world to reach strategic cooperation, develop professional performance products with industry -leading standards, use precision -level fabrics and process details, strengthen technology protection forces, and provide professional Outdoor sportsmen with peace of mind equipmentsupport.

2. Mountain

In 2021, Pelliot opened the Outdoor product line of the mountain system, aiming to create a relaxed and exquisite Camping time and enjoy the free switch between cities and Outdoor.Return to nature, Go Camping!

3. Classic

The classic series adheres to the pure Outdoor gene, focusing on functionality, comfort and durability, and also has a sense of fashion design.

4. Training

The use of functional technology fabrics, which meets human mechanics as the design foundation, ensures flexibility of sports and meets the dual needs of young groups for sports and comfort.