men's travel item list Daquan

1. Certificate and finance

ID card: essential documents, for accommodation, transportation, etc.

Cash and bank cards: A moderate amount of cash is required to be used from time to time, and bank cards are used for payment and withdrawal.

Driving license and driving license (such as self -driving): If necessary, please carry.

Passport and visa (international travel): necessary for international travel.

2. Electronic equipment

Mobile phones: communication, navigation, entertainment and other functions must be fully charged and carrying chargers.

Charging treasure: Provide additional electricity for mobile phones and other equipment, and recommend portable and self -wiring styles.

Headphones: Noise reduction headphones are better, which is easy to listen to songs, watch videos or call on transportation.

camera/camera (if necessary): record the beautiful moments during the trip.

Notebook computer/tablet (business travel): Depending on work needs, carrying chargers and necessary accessories.

3. Washing supplies

Toothbrush and toothpaste: Keep oral hygiene.

Shaver: If necessary, it is recommended to carry a portable electric shaving knife and full power in advance.

Shampoo and shower gel: portable, easy to carry and use.

Facial milk and Skin care products: Choose suitable products according to personal Skin quality.

sunscreen: It is necessary to prevent ultraviolet damage during summer or outdoor activities.

4. Daily necessities

Water cup: Keep your body moisture, and recommend carrying a thermos cup.

Paper towels and wet towels: used for cleaning and disinfection.

Umbrella/raincoat: prepare according to the weather forecast to prevent sudden rain.

Backpack/luggage: Select the appropriate size and style according to the length of travel and the number of items.

glasses/Sunglasses: prepare according to personal needs.

5. Drugs and first aid Bags

Commonly used medicines: such as cold medicines, diarrhea, analgesic drugs, motion sickness drugs, etc.

Chuangtai and disinfection cotton: used to deal with small wounds.

body thermometer: Monitoring body temperature, timely discover fever and other problems.

Personal common medication: If you have chronic diseases or other special needs, bring related drugs.

6. Other items

Snacks and beverages: Carry in an appropriate amount to prevent hunger or thirst.

Books/magazines: long -distance travel can be used for passing time.

Travel Guide/Map: Understand destination information and plan itineraries.

Disposable underwear and socks: convenient to change and maintain personal hygiene.

Eye masks and earplugs: Improve sleep quality, especially in noisy environments.

What clothes are good for men to go out

1. Basic clothing

Short -sleeved T -shirt: Suitable for summer or warm weather, lightweight and breathable, easy to move.

Long -sleeved shirt: Suitable for spring and autumn or morning and evening temperature differences, both warm and Sun protection.

jeans: Classic versatile, suitable for various occasions, and have good wear resistance.

Casual pants/sports pants: high comfort, suitable for leisure travel or daily travel.

sports shoes/casual shoes: easy to walk and stand for a long time, suitable for outdoor activities and urban exploration.

2. According to seasonal selection

(1) summer

Short -sleeved T -shirts, shorts or cropped pants: cool and breathable, suitable for high temperature weather.

sunscreen: light and breathable, with sunscreen function, protecting the Skin from ultraviolet damage.

sun hat and Sunglasses: essential for Sun protection, and also increase the sense of fashion.

(2) spring and autumn

Long -sleeved shirt, thin sweater or sweater: warm and fashionable, suitable for season with large temperature differences.

jeans or Casual pants: both warm and comfortable, suitable for outdoor activities in spring and autumn.

light and light jacket: such as jackets, windbreakers, etc., easy to carry, you can put it on or take off at any time according to weather changes.

(3) winter

down jacket or thick coat: good warmth, suitable for cold weather.

Long -sleeved sweaters or warm underwear: As an inside, increase the warmth effect.

Trousers and warm socks: prevent legs from being cold.

waterproof and non -slip boots: suitable for snow or slippery roads.

Men's leisure travel bag out

1. Backpack

Backpacks usually have a large capacity, which can install various items required for daily travel, such as clothing, electronic products, kettle, etc.Backpacks are designed with a Backpack, which can disperse the weight of the Backpack, reduce the pressure on the shoulders, and increase the comfort of the burden.Many backpacks of backpacks are also equipped with multiple pockets and partitions to facilitate users to organize and carry different types of items.

2. Shoulder Backpack/crossbody bag

The shoulder Backpack is usually simple, light, light, easy to carry, and also has a certain sense of fashion.You can adjust the length of the shoulder straps as needed

3. handbag/travel bag

Handbags and travel Bags usually have a large capacity, which can install more items, suitable for long -distance travel or carry large items.Although it is mainly dependent on hand, some styles are also equipped with shoulder straps, which is convenient to convert to shoulder or crossbody when needed.

4. Bags/chest Bags

The waist bag and chest bag are small, lightweight, and easy to carry.It is close to the body to effectively prevent the stolen items.

Natural lawn is good or artificial cylinder is good

1. The characteristics of artificial grass and natural grass:

1 , Shock absorption performance: Natural garries requirements are on 50%-70% Between the artificial garries requirements 55%-70% between.

2 Deformation performance: For natural turf, the muddy turf soaked in water is very small or not deformation; 1 arrive 7 Between millimeters.

3 Non -slip performance: Natural garries requirements are on 0.6-1.0 , Artificial Garrier requires 0.6-1.0 Essence

4 Resistance: Natural grass Skin resistance value is 25-50 Names; artificial turf the resistance value is 35-45 Name.

5 , Setting distance: Natural grass leather gliding distance is 0.20-0.55 Mi; artificial turf smoothing distance is 0.25-0.45 rice.

Second, the effect of Artificial lawn and natural turf on the ball

1 , Vertical bouncing height: the value of the natural turf 25%-45% Between; the value of artificial turf is 30%-42% between.

2 , Rolling speed of the ball: The value of the natural garries is 4 rice -10 Mi; the value of Artificial lawn is 4 rice -10 rice.

3 , Bruch of different angle balls: with 25 The corner is landed, the speed of the bounce 50 A kilometer per hour, height 60% arrive 80% Essence

Third, the venue test of artificial grass and natural grass:

1 Slope: Slope of the artificial grass is less than 1.0% ; Natural lawn slope requires less than 0.5% Essence

2 , Flat degree: artificial grass flat flatness 3 Mi Niandong 10 Millimeter, 300 Small within millimeter 2 Millimeter; natural lawns are flat and the qualified value is not greater than 30mm The best value is not greater than 20 mm Essence

3 Water seepage rate: Artificial lawn base infiltration performance is greater than 180 Millimeter / / Hours; natural garries and ground base penetration performance greater than 180 Millimeter / / Hour.

What are the advantages and disadvantages of natural lawns and artificial lawns

Advantages of natural lawns:

1 The natural lawn has unparalleled characteristics. The soft texture of the natural lawn makes the surface of the lawn have appropriate smoothness. The heat generated by friction is within the human body tolerance and will not cause damage to the human body.

2 The natural lawn has moderate hardness and return elasticity. Athletes can arbitrarily make various technical actions without worrying about severe damage because of falling.

3 The natural lawn is composed of green plant gay grass. The stems and leaves are soft and soft. When the human body rubs with it, it will not generate electrical electricity.

Natural lawn disadvantages:

Natural lawns are easily affected by weather. There is no Artificial lawn, high cost, and trouble.

The Artificial lawn is a lawn made of non -life plastic chemical fiber products as raw materials.It is an important way to solve natural lawns such as high strength and extremely unfavorable growth conditions such as excessive strength and extremely unfavorable growth conditions.

Advantages of Artificial lawn:

Compared with natural lawns, artificial lawns have very obvious advantages.

1 , Whether in the cold winter or hot summer, it can be used normally. It is affected by rain and snow, and it is all -weather. 24h Use, especially suitable for school football field or various training grounds with high frequency.

2 , Good durability, a period of normal use of artificial lawns can be reached 10 Over the year.

3 , Low -stage management and maintenance costs, simple maintenance, no need to plant Items No need to trim Items No water Items The indoor can still be green, and winter does not change yellow.

4 The surface layer can be recycled and reuse, which has environmental protection performance.

5 Many international top competitions and domestic competitions are carried out in the Artificial lawn, which will provide greater consistency in terms of results.

6 , Will not cause allergic reactions.

7 The entire lawn is uniform and consistent, and it will not have a bare nude area like a natural lawn.

There are also some obvious disadvantages of artificial lawns:

1 Because most of the chemical fiber materials are used, and asphalt or concrete are used as the grassroots, their surface hardness is large, the cushioning performance is poor, the rebound rate is high, the football rolling distance is short.Back -up strength is easy to cause athlete's ankle or knee injury, which makes the injury rate of the ankle or knee joint on the Artificial lawn is higher than that of natural lawns.

2 The surface temperature changes on the surface of the Artificial lawn is large. If exposed to extreme temperature or under the irradiation of strong ultraviolet rays, some chemicals in the Artificial lawn will change, causing it to change the characteristics in a short period of time, which will be athlete to athletes.Athletic status and environment have a great impact.

3 The Artificial lawn has a corrosion agent and causes some damage to the athlete's body.

The Artificial lawn is an analog lawn made of plastic chemical fiber products as raw materials.It can be used all over the weather, which is affected by rain and snow weather; simple maintenance, low maintenance costs; environmental protection of materials, recycling and reuse of surface layers, etc., are irreplaceable by natural lawns.Therefore, it is very suitable for the use of primary and secondary school sports fields or various training grounds with high frequency. Therefore, artificial lawns are more popular than natural lawns, and more people choose artificial lawns.

Advantages and characteristics of Artificial lawn

First, clean hygiene:

Many parents think that there are more bacteria on the lawn, because the children's resistance ability is poor, and it is not suitable for playing on it. Therefore, these real lawns are gradually replaced by Artificial lawn.There are many benefits to laying artificial lawns. Not only are they safe and healthy, they will not become bare to trample.

Second, all heavenly:

The Artificial lawn is basically not affected by weather and regions. It can be used in extreme climate areas such as high cold, high temperature, and plateau, and has a long service life.

Third, multi -purpose:

The color of artificial lawns is diverse, and durable and non -fading can be matched with the surrounding environment and building complexes. It is a better choice for sports venues, leisure courtyards, roof gardens and other places.

Fourth, laying and maintenance:

Artificial lawn laiding has low requirements for the foundation, and can be constructed on asphalt and cement and short cycles.It is especially suitable for the construction of middle and elementary school venues with long training time and high density.The Artificial lawn is convenient for maintenance, the water seepage performance is good, and it is particularly wear -resistant.

Fifth, excellent physical chemical performance:

After hundreds of thousands of wear trials, the fiber weight is lost by only hundreds of thousands of times2%-3% EssenceIn addition, the tensile, water seepage, and elasticity are high, and after heavy rain 50 It can be drained in about minutes.

Sixth, good security:

The use of the principles such as medicine and sports can make the athletes be protected when they exercise on the lawn, and the ligament, muscles, joints, etc. are protected, and the collision power and friction when they fall are greatly reduced.

Seventh, reduce the workload:

After laying the Artificial lawn, the workload of the staff also reduces a lot. It only needs to be checked regularly to repair the uneven places.

It is worth mentioning that the various strokes of the Artificial lawn sports venue have been formed with white grass seedlings at one time during production.It belongs to environmentally friendly products. It does not contain harmful substances and has noise absorption.The production uses a number of modern science and technology, so that the product's tensile strength, firmness, flexibility, wear resistance, anti -aging, and color fastness have reached a considerable level.

The maintenance method of three -color dragon blood tree

1. Soil

The cultivation soil of the three -color dragon and blood trees is best to drain well, loose breathable, and rich in humus. When it is equipped with soil, it can be mixed with corrupt leaf soil, coconut bran, and sand according to the proportion.After the soil is prepared, disinfection and sterilization can be performed to remove germs and pests.During the cultivation, the soil is loosening regularly to keep the soil loose and soft.

2. Light

When the three -color dragon blood tree is maintained, the sunlight is a very important factor. It is more shade -resistant, but the sun cannot lack the sun during the growth. Only by ensuring that the sunlight is irradiated can the leaf color be more beautiful.It can be kept in the sun in the room. The growth period can be moved to the Outdoor to see the light, but pay attention to avoid strong light.

3. Temperature

For the three -color dragon blood tree, it can grow rapidly at a suitable temperature and can promote strong growth.The suitable growth temperature is about 18-30 C. Try to maintain the temperature in this range. Pay attention to keeping warm in winter. It is best to keep the temperature above 10 C.

4. Watering

At the stage of strong growth, pay attention to regular watering to keep the soil moist, but control the amount of water and not accumulate water.For air humidity, it should be maintained at about 70 % -80 %.The principle of watering is "not dry without watering, and pouring it through", and the overall state is maintained.

5. Fertilization

Reasonable fertilization and maintaining nutritional supply. During the growth period, they should be chaocated every ten days and a half months. In addition to fertilizing the roots, fertilization is also required.When the temperature is around 20 C in spring and autumn, it can be fertilized every 10 days. Use alum Fertilizer or Compound fertilizer, thin Fertilizer, and light concentration.Essence

6. Disease

The diseases of the three -color dragon and blood trees are mostly stem rot. Generally, the accumulated water causes the root cause of poor breathing. Therefore, when configuring the substrate, it must be loose and breathable. Watering should not be too diligent.In addition, the auxiliary disinfection agent is sprayed to prevent it.

7, insect pests

There are mainly granic insect harm, and 40%oxidation lotus oil is 1000 times liquid.

8. Breeding

Cuttings and presses can be reproduced.The cuttings are the best in June to October. The top branches are cut 10-15 cm, and 5-6 leaves are cut. After insertion, take root and sprout for 1 month.The high-altitude strip breeding can be selected from the main stem from May to June, 20 cm from the top, peeling the ring-shaped shape, 1 cm wide, cover the moist moss, and bandaged with a plastic film, about 40 days of root.

1. Is the mechanism charcoal toxic?

Mechanism charcoal is also known as mechanical charcoal. As the name suggests, it is the charcoal made of machinery, and it is also known as the charcoal. It is a charcoal rod -shaped material squeezed by wood fragmentation. Many friends are worried that the mechanism charcoal is toxic. So is this true?

The mechanism charcoal itself is non -toxic, but it will produce toxic carbon monoxide under incomplete combustion.

In fact, whether it is mechanical charcoal or traditional charcoal, because they are the essence of carbon elements. When burning, if the space is closed, carbon monoxide may be generated because of incomplete combustion.Cause indoor personnel poisoning.

2. Will the mechanical charcoal generated carbon monoxide?

Will the mechanism produce carbon monoxide when burning? Depending on the situation:

1. If the indoor combustion mechanism is carbon, the indoor space is closed, the air does not circulate, and the oxygen is insufficient, the mechanism charcoal will produce carbon monoxide when burning.

2. For Outdoor, the mechanism charcoal is generally completely burned, which produces normal carbon dioxide. Even if there is a small amount of carbon monoxide, because it is outdoors, there is no need to worry about carbon monoxide poisoning.

3. Will the mechanism charcoal smoke?

No.

Compared with traditional charcoal, the advantages of the mechanism of charcoal are smoke -free. The content of charcoal fixing charcoal is high, about 80 %, burning without flameless, smoke -free and charcoal heads.%Or 6%, there is basically no ash after burning, it is a very useful charcoal.

1. Radio Telescope

A radio Telescope refers to the basic equipment of the radio waves from celestial bodies, which can measure the strength, spectrum and polarization of celestial radio powerEssenceIncluding a targeted antenna that collects radio waves, high sensitivity receivers that amplify radio signals, information records, processing, and display systems.20century60In the age of astronomy, four very important discoveries were obtained: pulse stars, star -like body, cosmic microwave background radiation, and interstellar organic elements, known as the "four major discoveries".These four discoveries are related to the radio Telescope.

2. Principles of Radio Telescope

Radio -Telescope principleIt is similar to the optical reflection Telescope. After the projected electromagnetic wave is reflected by an accurate mirror, it reaches the public focus.Rotating parabolic faces are easy to focus on mirrors, so most of the radio Telescope antenna is parabolic.The surface error rate of the surface and an ideal parabola of the radio Telescope and an ideal parabolic surface is not greater than greater than/16~/10The Telescope can generally work effectively on the radio power band of the wave grown than .

Observations for rice waves or long rice waves can be used as a mirror surface; while observation of centimeter waves and millimeter waves, it is necessary to use a Smooth and accurate metal plate (or coating) as a mirror.A radio waves that are projected from celestial bodies and bring together to the focus of Telescope must be reached a certain power level to detect the receiver.

The weakest level of current testing technology should be reached10-20watt.The power of the RF signal is first enlarged at the focus10~1000Be more and change to a lower frequency (intermediate frequency), and then transfer it to the control room with a cable, where to further magnify and detect, and finally record, process and display it in a way suitable for specific research.

The antenna collects the radio radiation of celestial bodies, and the receiver processs these signals and transforms into a form of recording and display. The terminal device records the signal and is processed according to specific requirements and then displayed.The basic indicators of the performance of the radio Telescope are spatial resolution and sensitivity. The former reflects the ability to distinguish the radio dot sources close to each other on each other, and the latter reflects the ability to detect the weak radiation power supply.Radio -Telescope usually requires high space resolution and high sensitivity!

Third, the principle of optical Telescope

The basic principle is the refraction of light.Relying on two lenses that make up a Telescope.The front of the Telescope is a large diameter and a long -focal length, named material mirror; the latter lens in the back is short -focalized in diameter, called eyepiece mirror.The light mirror converges the light from the distant scenery, and the back of it is reduced into a shrinking real image, which is equivalent to moving the distant scenes closer to the imaging.The image of this scenery just happened to the front focus of the eyepiece. Looking at the mirror, as if looking at things with a magnifying glass, you can see a virtual image that enlarged many times.In this way, the scenery that is far away seems to be in front of the Telescope.

Fourth, the difference between optical Telescope and radio Telescope

The same point is that they are all electromagnetic waves from the celestial bodies. The difference is that the electromagnetic waves they receive are different. The radio Telescope receives radio waves. The radio Telescope can capture a lot of light that can not be seen by the naked eye.And optical Telescope can only capture visible light.

The radio Telescope resolution is the highest, because the radio Telescope can see many times more light than the optical Telescope wavelength. Theoretically the most farthest.The true face is not as accurate as the optical Telescope.

The farthest thing now is the Hubble Telescope, which belongs to the optical Telescope, which is reflected. It is no different from ordinary Telescope. Although the diameter is only2.4Mi, but compared with the foundation Telescope, it is not affected by atmospheric interference, and the caliber5Compared with Mir's Haier Telescope, "Hubble" can see140A celestial bodies outside the year, the Haier Telescope can only be seen20Outside the 100th year, the atmosphere can weaken the starlight13Times.