1. Is the conjoined folding table and chair good?

The folding tables and chairs used outdoors can be divided into two types: conjoined and split -type according to different design. In comparison, the conjoined folding tables and chairs are better. Its advantages are mainly reflected in the following aspects:

1. Conjusational design, relatively portable, not afraid of losing.

2. Strong and practicality, fine workmanship, and very strong.

3. Very lightweight, easy to carry, and also convenient for people who are playing outside to rest anytime, anywhere.

4, Smooth appearance and high strength.

In general, the Outdoor conjoined tables and chairs are still better. After all, the requirements for Outdoor tables and chairs are small and simple, can be folded and can be carried with you. The design of the conjoined table and chair is more practical.

2. What is the material of Outdoor tables and chairs

The material of the Outdoor conjoined tables and chairs generally uses the aluminum alloy material or steel, which is strong and lightweight.Long, the appearance is better.

Third, conjoined folding tables and chair specifications

There are many different dimensions and specifications of conjoined Outdoor folding tables and chairs. The products produced by different manufacturers may have different specifications. Generally standards of conjoined Outdoor folding tables and chairs. The size specifications are:

1. Expand size: 86.5 width 135 height 66cm.

2. Desktop size: 85.5 width 67 height 66cm.

3. chair surface size: 30 width 27 40cm.

4. Net weight: 7.5kg.

5. Mao heavy: 8kg.

1. When did the Swimming ring invented?

In the past, some people thought that the lifeblonga was introduced into China from Europe and the United States. In fact, the lifeburn circle was created and invented by our Chinese.

As early as two or three thousand years ago, my country had a "life -saving circle", which was the dry gourd.At that time, the clever Chinese people found that holding the dry gourd melon can float the body on the water and drown the gourd melon to become the most primitive life -saving equipment.Later, most of the vessels sailing at sea brought gourds to prevent unexpected.It can be seen that the ancient people of my country used the dry gourd to cross the river. This is the most primitive lifebuilding circle.

In the song Dynasty, the production method of the lifeburn was a step forward. Some people began to use soft wood, reeds, etc. to be prepared into a ring object, so that people can drill in and make the ring supporting people.The gourd melon is much more convenient, and it has become a veritable life -saving "circle".Han Shizhong, who was anti -Golden, who was anti -golden hero Yue Fei at the same time, sent Wang Quan to Jinshan to fight against the enemy. Before leaving, Han Shizhong ordered him not to use the boat to cross the river, so as not to be found by the enemy.So Wang Quan sent a circular floating ring made of cork to each soldier, allowing them to restrain the floating ring on the waist and cross the river.The soldiers quietly crossed the river under the leadership of the royal power.At that time, the floating ring used by the royal power was the predecessor of the modern lifebing circle.From the time to modern times, with the application of new technologies and new materials, various life -saving equipment appeared: lifeboats, life jackets, and uniform.But the traditional equipment of the lifebuilding circle is still retained by people, and it is still the easiest life -saving Tool.

2. What materials are the swimming rings made

The material of the inflatable Swimming ring is relatively single. Most of them are made of ordinary PVC materials. Most of the domestic PVC materials are the main in China. The 6P environmental PVC is better.

3. What material is the best material in the life circle

At present, the main forms of domestic Lifeline products include polystyrene packaging cloth life rings, polyurethane polyethylene composite lifebladder, and knot -type polyethylene lifebirth circle.

1. Polyetstics packaged cloth life ring

The polystyrene cloth life ring is mostly used in the inland rivers. The rim core material of the life ring is made of polystyrene material.Generally, the production process is to wrap glass fiber cloth in the rotary core material, and apply 3 layers of phenolic resin to form a sealed glass steel shell, and then wrap and apply several layers of paint.

2. Polyethylene compound lifebuilding circle

Polyethylene composite lifebrows are used as high -density polyethylene materials as shells. The internal rechargement of polyurethane foam materials is a new type of lifebuilding in China.At present, more than 100,000 annual output has reached more than 100.The composite life ring solves the problems of oil -resistant oil tolerance of polystyrene bales, in high temperature environments and long -term radiation in ultraviolet radiation, which is prone to aging, paint layer peeling, and complex manufacturing process.This type of lifebuilding has the advantages of solid color, Smooth surface, anti -aging, large mechanical strength, and corrosion resistance, but production costs are higher than that of polyethylene Bags.

3. Knotchye polyethylene foam life ring

The polyethylene lifebuilding circle is also known as the citrine polyethylene foam lifebuilding circle. It is made of low -density polyethylene foam. It is a new technology product. At present, only a few companies in China can produce.The circle of its products is only made of a single material of polyethylene. The circle body is full of elasticity. The surface is bright and beautiful on the surface. The strength, buoyancy, oil resistance and erosion resistance are not comparable.At present, the domestic product has high technology and high costs. The products produced only supply military or exports.

1. What is the principle of color change Cycling glasses

Trimous glasses can change the color of the lens according to the strength of the external light, thereby protecting the eyes from strong light stimulation. Therefore, many friends choose to wear colorful glasses when riding, but many friends do not know the principle of color change Cycling glasses.The working principle is simple:

1. When making color -changing Cycling glasses, the light color material is added to the glass raw material. The lens contains silver (silver chloride, silver bromide) microcrystalline.Electronics, the electrons are captured by silver ions and reacts: colorless silver is decomposed into opaque silver atoms and transparent halogen atoms. The silver atom absorb light to reduce the light transmission rate of the lens, so the color of the glasses changes.

2. Because the halogen in the color changing lens is not lost, the reversible reaction can occur. After the activation of the light disappears, the silver and the halogen are reused to restore the lens to the original transparent colorless or light -colored state.

riding is often outdoors and needs to be stimulated by the sun. Therefore, it is better to wear a pair of discolored Cycling glasses. However, some friends are worried that the color changing Cycling glasses will be harmful to the eyes.Intersection

2. Is riding colorful glasses harmful to the eyes?

The light transmission rate of color -changing Cycling glasses is relatively low. Although it can absorb most of the ultraviolet, infrared rays, and various harmful glare, due to the halogen chemical components contained in the lens, the light transmission rate of the lens is relatively poor. If it is used for a long time, it is used for a long time.It may cause visual fatigue and not suitable for long -term cycling.However, with the advancement of manufacturing technology, the discoloration rate and fading rate of color -changing lenses have greatly improved, and high -quality color -changing Cycling glasses almost have no harm.

In addition, it should be noted that there are some inferior color -changing Cycling glasses unevenly discolored, either slow color change, fast fading, or fast discoloration and slow fading, and some even do not change color at all. This Riding glasses can not be worn for a long time.For effective eye protection, you should pay attention to buying two lenses when you buy.

The difference between the double -layer Tent and a single Tent

1. Different manufacturing process

Single -layer Tent production process is relatively simple.

The double -layer Tent adds a layer of breathable internal account on the basis of the design of a single -layer Tent.waterproof and windproof, breathable internal accounts; the heat emitted by the human body will be condensed on the inner wall of the external account through the inner account, and then follows the inner wall of the external account to slide to the gap between the outer Tent and the inner account.sleeping bag.

2. Different volume operations

Single -layer tents are lightweight, small in size, small area, and easy to build.

The double -layer Tent is large, and there is a lot of space to occupy it. It covers a large area and is tedious.

3. Different use environment

Single -layer tents are mainly used for summer Camping activities such as Park leisure and beach leisure. Generally, it is not outdoors overnight, and the price is relatively cheap.

Double tents are generally used for Outdoor wild camps overnight. Because of the light weight, it is also used for snow mountain climbing, but it is necessary to use high -tech Functional fabrics and auxiliary materials, which are more expensive.

4. How to choose

Because in a cool season, the heat excluded by the human body will be condensed in the inner wall of the Tent under the influence of the air outside the Tent.Internal accounts are connected, and the heat emitted by the human body can pass through the inner accounts, and the water droplets that are condensed in the outer Tent can be flowing on the ground.Therefore, the general environmental temperature is more suitable for using a single -layer Tent when it is 5 C. When the ambient temperature is lower than 5 C, because the inner wall of the Tent will be cooked, it is best to use a double -layer Tent or a three -layer Tent.

The advantages of double -layer tents

Everyone knows the place where the Tent provides people when it is camped. Everyone knows that the temperature at night will be reduced, so the first Tent can keep it warm.Because of the temperature difference between day and night, the humidity at night will be very heavy, and the Tent should prevent moisture from being soaked.Especially in the mountains and forests, the fog is particularly heavy in the morning and evening, and the water vapor outside the Tent is severely condensed. If the fabric cannot be waterproof, small water droplets will be leaked in the Tent, and the environment is cold and wet, which cannot provide people with good rest places.

Because of the two requirements for tents above, single -layer tents cannot adapt to Camping.Although the single -layer Tent is also made of thick and waterproof Oxford cloth, there is only one layer. It cannot be kept warm and waterproof. It can not be adapted to rain.The double -layer tents are different. Its design is divided into two layers of external accounts and internal accounts. There is a space separated between the two layers.The external accounts block the wind and rain, and keep the internal account warm and dry. Whether it is raining or snowing, it can give travelers a peaceful place.In addition, the external accounts and internal accounts of the double Tent can be used separately. When the sun is large during the day, it can be opened alone, which becomes a gazehop.

How to put it in a double -layer Tent

1. Before building a Tent, you must first choose the right camp. Generally, you choose to stay away from the river.

2. First take out the Tent's foreign account and internal account when setting up. You can first set up an internal account, or you can set up the foreign account and then get into the internal account.Put one of them on the ground according to your own habits.

3. After the inner account is paved, remove the nail Bags, poles and other accessories.First handle the Tent pole, connect the Tent rods one by one, and the connection should be tightly tightened to make two long rods of equal length.

4. The pipelines of the Tent bolt on the internal account will pass the two long rods through the relative two pipes.Two long rods should be worn at the same time. The long rod will be arched up because of the Tent structure, and the Tent will be opened as a result.This process requires at least two people. It will be more convenient to operate by four people.When wearing a pipeline, wear the corner of the Tent to the bottom corner, do not wear a loop.The Tent supports the two ends of the long rod to the ring at the bottom of the corner, and the entire inner account will be fixed.

5. After the internal account is done, you can hang the foreign account. The method is to open the external account and cover it on the inner account.The windproof rope is designed on the external account. After pulling the rope straight, it is fixed with the windproof hook. One can strengthen the stability of the Tent, and the wind will not overturn the Tent.The two layers of tents are more powerful and warm and humidifying.

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The difference between Lu Chong and skateboarding

1. Different structures

The surface of the skateboard is shorter, light, crispy, and bullets. Because it is tilted up and after, it is also called "double warp"; the Lu Chong plate is slightly longer, the surface of the plate is flatter, and there is no obvious warp.Therefore, the skateboard is easier to find the foothold of the "brush board", which is more suitable for players to try cool movements; Lu Chong board is more suitable for smoothing.

2. Different sizes

The common size of Lu Chong board is about 76-84 cm long, about 23-24 cm wide, and common size of skateboarding is generally about 75-80 cm long, about 19-21 cm wideMore, especially width is generally wider than skateboarding.

3. Different gameplay

Lu Chong board gameplay is mainly flat and props. The common actions in flat ground are Pumping. Partners with skateboarding can complete some street -like street movements. However, because the volume of Lu Chong board is heavier, it is even more difficult to complete.The land -used props are mainly wavy roads and bowl pools. The movements on the bowl pool are not rich in skateboarding.The skateboards can slip on a variety of roads and have richer gameplay.skateboarding is free, street -type, and bowl pools. The most common is street gameplay. The movements are relatively rich and the playability is stronger than that of Lu Chong board.

Which is simpler and skateboarding

skateboarding is a movement on the hard ground. It is necessary to use skateboarding picots to carry on the road, sliding, and jumping on the road.Compared with Lu Chong, the skateboarding technical items are richer and diverse, and require a stronger sense of balance and coordination.skateboarding is suitable for flat grounds such as parks or specific training venues, and it is also suitable for practicing special technical items such as platforms and barrels.

Lu Chong is a sports based on aerodynamics and needs to use specific devices, such as skating wings, etc., on the top of high mountains or mountains.Compared with skateboarding, Lu Chong needs more space and specific natural conditions.Lu Chong is more difficult, and the technology is more complicated. It is particularly suitable for people who seek adventure and people who love extreme sports.

skateboarding and Lu Chong are both expected and learning sports, but you need to choose according to your personal love and physical condition.If you are a beginner, it is recommended to choose skateboarding, step by step, first master the basic technology and sense of balance, and then gradually try high difficulty and extreme technology.Which sport to choose must be comprehensively considered according to personal preferences, preferences and physical conditions to better enjoy the fun of sports.

Which one is more fun in Lu Chong or skateboarding

First of all, the slider is more difficult than Lu Chong, and has higher requirements for the body. It is not friendly for beginners. Anyone who has tried skateboarding has never fallen to Qiyang and Eight Chasa and elbows?Standing up and shaking, but the moving is moving ... If you don't have a strong sense of balance and the control skills, I'm sorry, the next "rollover" is you.Because of this, the small wooden board of the skateboard can become synonymous with adventure and rebellion.

In comparison, Lu Chong is better than skateboarding, and the fault tolerance rate is higher. Lu Chong board also combines the various advantages of the skateboard, such as the elegant and double -warming of the long board, as well as the battery life of the fish plate.Even novice, without fancy, you can soon enjoy the joy of gliding in Lu Chong.The entry threshold is low, and the gameplay is flexible and diverse. This is why Lu Chong can become a national movement, but the skateboard cannot.