1. How tight compression pants are appropriate

The compression pants are mainly aimed at the muscle and knee joint support for fitness people with lack of exercise or relaxing muscle in the leg muscles.If you often exercise leg strength training, even the leg muscles are relatively solid and you can wear it without wearing.However, it is recommended to wear for long -distance training, because long -distance Running can also cause the leg muscles to be too fatigue. At this time, the compression pants play a role in supporting and relieving fatigue.

Is it better to wear a compressed pants tightly?It is recommended to wear a large size or right compression pants.

two,Can I wear sports compressed pants for a long time?

It can be worn during exercise, but it is not recommended to wear it for time in daily work.

The physical feeling of wearing a exercise compressed pants during exercise is the tightness, which will make more nutrients and oxygen in the blood being transported into the muscles in a working state.Focus on meat power, alleviate lactic acid accumulation, and make exercise more lasting.At the same time, it can fix the swinging amplitude of the muscles and avoid the burden caused by invalid oscillation.

In daily life, it is very important to keep blood circulation.Sport compression pantsIt may be uncomfortable when wearing it for a long time, and it is not conducive to blood circulation.Therefore, it is not recommended to wear it for time in daily work.

How to choose Lu Chong board

1. Choose the right front bridge

For the choice of the system of Qianqiao, it basically determines the Lu Chong board brand you need, and then combines various reference factors to choose specific styles.There are currently two front bridge systems on land surfing boards: PU Bridge. This front bridge system is stiff and more stable; the front bridge system of the spring bridge is soft and more flexible.In terms of the selection of the front bridge system, flexibility and stability are inversely proportional, and the two cannot be both.

2. The board is long

The height determines the center of gravity, and then affects the length of the board. The higher the board, the longer the board to ensure that the center of gravity when the body is folded is shifted in the plate.The more you need to stand on your feet to maintain a basic surfing posture to ensure balance and aesthetics.The shorter of the board/wheel, the more flexible.

3. board surface width and ends of the plate

The width of the board is a very subjective factor. Some people like wide plate surfaces, bringing more sense of security, and some people like to feel more flexible.If your feet are big and you feel that you have a sense of security on the board, you choose a wide board, and you are happy.For the design of the tail, if there is an advanced requirement in the future, try to avoid the tour tail design as much as possible.

How to choose a Lu Chong board

1. Size selection

At present, there are many sizes and specifications of Lu Chong.The length is in the range of 30-34 inches (about 76-86cm).Among them, 30-32 inches are high.The 33-34-inch possession is less.Usually if height is 170cm and below, you can choose 30 inches (about 76cm).Those who are above 170cm can choose the size of more than 32 inches or more. Generally, 32 -inch length can meet most needs.

2. Plate -type selection

Compared with the skateboard, Lu Chong board currently has double -handed and single -curved plates (tails), most of which are single -handle type, and partly uses double -handle type.For beginners, Shanqiao can satisfy use. If you want to play more, you can consider the double -head type.

3. Selection of front bridge system

Generally speaking, the stability of the PU bridge is relatively good and the flexibility is relatively poor.Stability and flexibility are inverse.Generally, more than 80%of Lu Chong players mainly play Carving and Pumping more. Since it is a road surfing board, the main thing is to experience the feeling of surfing.In addition, Pumping is difficult to get started.In this case, it is more suitable to choose a spring bridge, because the spring bridge is better.

How to choose from Lu Chong board

The choice of Lu Chongban does not need to be attached to foreign brands, and the quality of domestic brands is now very capable.Judging from the comparison of foreign land punching brands and domestic punching board brands, the main difference is the spring bridge in front of Lu Chong. This bridge currently has N kinds of bridges in China, which roughly avoids others' patents, butThe actual effect is not bad.Some bridges may have some problems in the early stage, but in optimization and improvement, many problems have gradually been solved one by one, and the effect is getting better and better.After all, market demand and interests determine that factories must make rapid improvements.

At present, the brands of Lu Chong board are some of the influence of the brands: cowsters, 66, Binglong, Jinfeng, Lexiu, etc.Therefore, the current Lu Chukan, which is made in China, also has a good gliding experience. How much is it worse than foreign brands?No one can say, not to mention as a novice.

Therefore, for most of the novice friends who are primary, you don't need to consider too complicated, you can choose the spring bridge directly.On this basis, the first step is to choose the size based on the height; the second step to select the sheet type you like; the third step selects the price that meets your budget; the fourth step is to choose your favorite board painting, and then wait for the delivery to enjoyThe fun of Lu Chong sports is good.

GPS's navigation application

Satellite technology can be traced back to the first generation of satellite navigation systems of maritime navigation to traced back to the 1960s. However, this satellite navigation system was originally designed mainly to serve the polar region and cannot be continuously navigation. The time interval of its positioning changes with latitude.It is above 70 degrees north and south latitude, and the average positioning interval does not exceed 30 minutes, but it takes 90 minutes near the equator. The second and third generation transit satellites launched in the 1980s Navars and Oscars make up10 to 15 minutes.In addition, it is difficult to improve the positioning accuracy (the speed of the Ship is required to accurately know the speed of the Ship), which is mainly used for 2 -dimensional voyage.

The emergence of the GPS system overcomes the limitations of the Transit system, not only high accuracy, continuous navigation, and strong anti -interference capabilities; it can also provide seven -dimensional space -time position speed information.In the initial experimental navigation equipment test, GPS showed that it could replace the TRANSIT and roadbirth radio navigation systems, and played the epoch -making role in navigation navigation.It is difficult to imagine which Ship is not equipped with GPS navigation systems and equipment. navigation applications have become the largest users of GPS navigation applications. This is difficult to compare with users in any other field.

There are many GPS navigation users, and their classification standards are also different. If they are divided according to the type of route, GPS navigation navigation can be divided into five categories: ocean navigation; coastal navigation; port navigation; inland river navigation; lake navigation.

Different stages or regions also have different environmental requirements for navigation safety, but they are to ensure the minimum navigation traffic conflict, and the most effective use of the increasingly crowded routes, ensuring sailing safety, improving transportation benefits, and saving energy.There are roughly the following categories according to the function of the navigation system:

1. Autonomous navigation

The independent navigation system is suitable for any of the above five routes. It is basically a simple navigation system. Its main feature is to provide users with location, speed, flight direction and time information., No communication system.It is adapted to a Ship that sails on any sea, lakes, and inland, from large ocean cargo ships to private yachts.

2. Port management and guidance of entering the port

This system is mainly used for Ship scheduling management at port/pier and guidance to Hong Kong ships to ensure the safety and order of voyage of ports/pier.The system requires two -way data/phonetic communication to facilitate the leader to guide the Ship; the context/sea map of the port area shows that the mooring ships and the available port routes are avoided to avoid collision.This system requires high accuracy of navigation systems, and uses differential GPS and other enhanced technologies.

3. route traffic management system

This type of system is similar to 2, but it is mainly used for Ship navigation and management on the offshore and inland river routes, and usually requires support of satellite communication systems, such as Inmarsat.

4. Tracking the surveillance system

Such systems are mainly used for maritime patrol boats, anti -smuggling and various yachts, especially private yachts to prevent theft.According to the specific use objects, some systems need to give navigation parameters and two -way data/phonetic communication, such as anti -smuggling boats.Sometimes there is no need to give navigation parameters. For private yacht anti -theft, only one -way data communication is required. Once theft occurs, the navigation system on the yacht continues to send its own position and to the relevant center in order to track it.

5. Emergency rescue system

The system also includes amphibious aircraft, helicopters and land vehicles.It is suitable for all five types of routes to search and rescue all kinds of sea, lakes, and inland risks, dangerous ships and people.This type of system requires two -way data/phonetic communication, which requires fast response time and high positioning accuracy.

6. GPS/Sound combination is used for underwater robots navigation

This type of combination system can be used for underwater pipeline laying and maintenance (required visual system), hydrological measurement, and other sub -operations, such as underwater survey for port/dock, so that the channel obstruction is cleared and the channel is unobstructed.Can be used for ocean fishing, fishing boat operation guidance, etc.

7. Other applications

The navigation techniques used are mainly:

GPS (GNSS);

Sound technology;

INS;

navigation

Radio navigation technology;

Image matching technology;

Other technologies.

The main communication technology adopted is:

FM and TV sub -carrier unidirectional data/speaking communication;

By -way data communication of the benchmark network;

Cluster communication;

Honeycomb communication;

Land mobile digital communication;

Satellite mobile communication;

Drives of traffic.

The first five communication technologies are mainly used for offshore, inland and lake areas.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

How to distinguish the quality of Sunglasses

Judging the advantages and disadvantages of Sunglasses can be examined from both quality and aesthetics.Aesthetic has personal factors, and quality is standard.The quality of Sunglasses mainly refers to the quality of the lens.At present, the world's general standards are the standards of the US Food and medicine and Health Inspection (F D A) standard.

1. According to the F D A standard, while the lens guarantees the light transmission rate, it is necessary to filter more than 90 % of the ultraviolet rays in the sun, and the lens should be labeled "UV-100protct10n"."UV-400protct10n" tag, so it is very important to check the UV tag on the lens.

2. The lens must not have the "degree" of optical lenses.Generally, if the refractiveness exceeds 15 %, it will feel dizzy when wearing.

3. The lens must have a high strength and pass the impact test.Generally speaking, the strength of plastic film (propionic acid or acetate), resin tablets, and glass tablets from small to large.

How to distinguish the quality of Sunglasses lens quality

1,Material of the lens

glass lens: wear resistance, but relatively speaking, its weight is heavier than other materials, and it is also easy to break.

Popular resin lens: This kind of lens is lighter than glass lenses, impact resistance, and is not easy to break, but the hardness is low, so it is easy to get hair and it is easier to have scratches.

2. The refractive index of the lens

The higher the refractive index, the thinner the lens, the higher the price.Such as the optical characteristics of the lens:SunglassesIt is a flat -light mirror, which cannot be littering, and should not have optical defects that affect vision.

The simple method of identification is to place the Sunglasses in front of the eyes and observe the distant targets through the lens, such as window frames or door frames, and then move the glasses up, down, back and forth, the target should not be swinged and wavy deformation.

3. The color of the lens

Sunglasses are divided into dark and light colors without color distortion.The choice of the color shades of the lens should be depends on the places of the required activity. Selecting different colors for different light sources and different use occasions, the color of the lens will affect the Shading effect.To enable Sunglasses to effectively block the strong light in summer, dark Sunglasses are needed, but if you wear a bike or drive, you should not choose a lens with darker colors.In addition, when Sunglasses are used for daily driving, they also need to have the ability to identify different color signal Lights.

Disclaimer: The above content is derived from the provision of the program system index or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

Hiking techniques for different road conditions

1. Bluestone Road

The pavement of this green stone road has become very Smooth.Once an accident is prone to rain and snow, it will fall, stomach, and severe injuries.After the rain, in addition to wearing non -slip shoes when going up the mountain, you have to relax.Do nt focus too much when walking. The direction of the center of gravity should be perpendicular to the slate on the ground. Try to use a Mountaineering stick.The center of gravity of the packet in the back bag should be the middle part, holding the rock wall or trees in his hand.When going down the mountain, you must use a Mountaineering stick, and the center of gravity is slightly leaning forward.Try to step on the gap between the slate as much as possible, or on the grass and trees on the roadside.The distance between the two people should be opened to avoid several people knocked down after falling.After the snow, it is best to use the four teeth with ice. If you do not use the ice, your feet must fall on the roots or plants on the roadside, and the Mountaineering stick is essential.

2. Jumping stone road

In the rainy season, before the heavy rain comes, do not go to the canyon to jump stones when the heavy rain is over.Prepare a pair of thicker Climbing shoes. Before jumping the stone jump, check whether the lace is loose, and then tighten the Backpack shoulder strap and Belt to let the Backpack close to the back to avoid shaking the Backpack when jumping.As a result, you lose your feet.When jumping stones, pay attention to observing the situation ahead, accurately judge the next foothold, and pay attention to observe the long -term dark marks left on some stones.In addition, be sure to clean the soles of the shoe. If the soles are sticking to the sand, be careful of your knees and front teeth.

3, muddy road

When taking this kind of road, the soles must be gripped. You must make full use of the Climbing stick as a fulcrum, so as not to pay attention to stepping into a deep mud.In addition, the temperature difference between the day and night in the spring and autumn seasons is large. After the rain and snow, the road surface of the soil road is very easy to freeze, and the risk factor is relatively high. When you encounter this situation, you must make full use of the Climbing stick and what you can do.It is very important to ensure that this fulcrum is firm.

4. Short bush

Take the shrubs with glasses, hats, and pull locks with punching clothes. At least 1.5 meters of distance between the players should be maintained to prevent the teammates from falling back to the back of the teammates and hurt themselves.Always remind the teammates to pay attention to getting lost too far away.

5. Stone Road

In addition to wearing non -slip shoes when going up the mountain, you have to relax.Do nt focus too much when walking. The direction of the center of gravity should be perpendicular to the slate on the ground. Try to use a Mountaineering stick.The center of gravity of the packet in the back bag should be the middle part, holding the rock wall or trees in his hand.When going down the mountain, you must use a Mountaineering stick, and the center of gravity is slightly leaning forward.Try to step on the gap between the slate as much as possible, or on the grass and trees on the roadside.The distance between the two people should be opened to avoid several people knocked down after falling.

6. Mountain Road

Traveling in the mountains, in order to avoid losing direction, save energy, and improve the speed of travel.If there is no road, you can choose to travel on the vertical mountain beams, ridges, mountainside, and river streams, as well as the terrain with high trees, rare forests, large gaps, and low grass.Generally, do not indulge in the deep gorge of the deep gap and the places where the grass is lush and the vine bamboo is intertwined.

7. Snow

Walking during snow or walking on the ground with a long snow time, the most important thing is that the stride is small and keeps fixed pace.March on the snow, pick the hard places.When walking on the soft snow for a long time, you need to step across and shorten the time to walk in the snow.When walking, take a little back a little back, and then ride your feet upwards.The back of the feet is to make the snowshoe room in front of the snowshoe. When you go forward, you can also play the role of the snow attachment.

8. River water wading

When crossing the river, the primary work is to carefully observe the water flow.Water flows slowly, you can choose to spend a shallow place and land on the shore that is easy to go ashore.In front of or next to the waterfall, the river is usually deep, and the amount of water is large, and you must not pass.The rivers are narrow upstream, and it may be feasible to cross the river -but first try the depth of the river with a pole.There may be rocks that are fake, and stones can be placed artificially to help them travel across the river.The riverside triangle bay is usually turbulent, and the river surface is very wide. Some rivers will even be affected by the tide. Do not cross them.Unless there are rafts or floating boats, you should still move towards upstream and find a river section suitable for crossing.When the wide river surface is unusual and conditional, it can be bundled to the river through the river.

9. step road

To deal with the steps, the best way is to use a good Climbing stick, adjust the direction of the feet, adjust the length of the Climbing stick, and always keep the Climbing stick in front of you, change the direction of the toes when the steps are down, and step by side. This can change the legs to change the legs.Topenal muscles to reduce muscle pressure.

10. Earth Road

This is the most common road when climbing. Many mountain mud trails are formed by mountain friends or local mountain people. The soft soil can buffer a lot of leg pressure, and it is easier to walk, but such a roadI am most afraid of encountering rain and snow, wet on rainy days, frozen in snow, caught up with rain and snow, and it is normal to fall.There is no good way to rain on rainy days. Wearing waterproof hiking shoes, you can only pay attention to it. You can wear snow sets in snowy days. Stewfooks can help you solve the problem well.

11. Chaospo

The way to mess with the stone slope, you must keep the distance with your teammates. When you go up and down, you must test whether the stones are loose before you step on each step.Step after steading.

12, ridge route

After taking the ridge route, you must pay attention to wearing professional hiking shoes and gloves, because many places may use hands and feet. In the north, you can add risks when you encounter strong winds, try to bypass or pass quickly.