1. What is the material of the Bicycle helmet?

Bicycle helmets are usually made in the following materials:

1. Plastic:Plastic materials are light and durable, sobikeOne of the main materials for helmet production.Polycarbonate (PC) is one of the commonly used plastic materials. It has excellent impact resistance and can protect the rider's head from collision damage.

2. Bubble:bikeThe foam material in the helmet is mainly used to buffer and absorb collisions, reducing damage to the head of the cyclist.There are many types of foam, including polystyrene (EPS), polyurethane and polypropylene.

3. Cellulose:CellulosebikeThe helmet uses carbon fiber, glass fiber and other materials, which can provide higher strength and stiffness, which is lighter and high -grade than plastic helmet.

4, metal:somebikeThe helmet is made of metal, such as aluminum alloy and titanium alloy to provide higher strength and rigidity, but it is generally heavy.

bikeThe material of the helmet needs to have the characteristics of lightness, solidity, durability, and can effectively absorb and dissipate the collision power to protect the safety of the rider's head.

2. What is the role of a Bicycle helmet

1. Protect head safety

Wearing a helmet is the most basic means to ensure the safety of cycling, because the head is the most vulnerable part.The general Bicycle helmet is made of high -intensity materials, which can effectively disperse the impact of fragments such as rocks, earth and stones, and snowflakes to avoid severe damage to the head.

2,Reduce wind and noise

In some occasions, riding requires a higher speed, and its own breathing or wind sound will cause greater interference.Wearing a helmet can isolate a certain wind and other noise to create a more comfortable environment for your cycling.

3. Keep body temperature

In winter, wearing a helmet will play a warm role, promote the maintenance of body temperature, and make the experience during cycling more comfortable.

In short, wearing a helmet is the basis for ensuring the safety and health of cycling.Whether it is ride or occasionally ride, we should develop a good habit of wearing helmets, so that safety has become the bottom line of our cycling.

1. Where is the old ghost bait produced?

The old ghost bait is produced by Hubei Old Ghost bait Co., Ltd.. Hubei Old Ghost bait Co., Ltd. is a horizontal integrated group company that grows up and takes root in China and then waves the international Fishing gear market.The old ghost bait was founded in the Wuhan East Lake High -tech Development Zone, Optics Valley in 1993. It has a standardized production plant covering 30,000 Square meters and a construction area of 28,000 Square meters.

2. How many types of old ghost bait are

1. September 18th

September 18 is the classic bait of the old ghost. It has three types: fragrant, fishy fragrance, and fishy.The incense bait mainly include field fishy versions, field battlefish fragrance, 3#, etc., and the fishy bait mainly include the wild version of the field, 4#and so on.

2. Speed attack

Quick Attack is the classic bait of the old ghost. The most classic usage of this bait is "the old three (40%of the field blue, 20%of the 2%, the speed attack 2%)."Quick Attack 2, Quick Attack 2 fishy version, quick attack No. 3, fast attack fishy fragrant pull, fast attack field lake library and so on.

3. The world's cats/carp

The world's cats/carp are the classic bait of the old ghost. The flavor type belongs to the thick fishy type. It can be opened alone or can be used with other bait.Cain/carp is easy to be vigilant and provoke small fish due to excessive fishy smell.

4, snail carp

Step carp is a classic bait of old ghosts. It mainly includes three types: snail carp No. 1, snail car No. 2, and snail carp 3.In summer, it is suitable for winter use with low temperature, while snail carp 3 is suitable for fishing large individual carps in spring and autumn.

5. Speed

The speed winner is the classic bait of the old ghost. There are three types of speed winners, red worms, speed winners, and speed winners., tilled mouth, Luo Fei, etc., fast winners are suitable for fish fishing, carp, grass, green, and , etc., while the fast winner lake and green carp are suitable for large fish fishing, carp, grass carp, and other large fishEssence

6. Crazy pull

Crazy pull is the classic bait of the old ghost. It mainly includes three types: large plate crazy pull, Antarctic shrimp mad, and red worm earthworms.Curdium, carp, , , Luo Fei, Qiao's mouth, etc., while the red worm and earthworms are suitable for fishing, carp, green, , , Luo Fei, tilled mouth, etc.Old ghost fish bait product Daquan & gt; & gt;

OldGhost

Hubei Old Ghost bait Co., Ltd.

• Place of origin: Wuhan City
• Registered capital: 3 million yuan

The old ghost group is a horizontal integrated group company that grows up and rooted in China and then waves the international Fishing gear market.Over the years, it has transformed, thrive, and move towards a professional and diversified path in continuous leap forward.The old ghost (group) company has emerged in the Chinese Fishing gear industry with a unique way of operating. From the original single old ghost bait to create horizontal development to the current trend of fishing products such as Fishing rods, Fishing lines, fishing hooks, floats, etc.And diversified market.In recent years, the old ghost (group) company has pioneered and innovated in its business philosophy. With its own strong brand research and development power and strong comprehensive strength, it has become the leader of China's local Fishing gear industry.Old ghost bait was founded in 1993 in the Wuhan East Lake High -tech Development Zone, Optics Valley, ...& gt;

1. The difference between bait and bait

1. Different quality and price

Most of the bait are expensive and cheap, and most of the bait are expensive.The main materials for making bait are bran, rice bran, dead fish and shrimp, etc., while bait uses bait additives, such as Arctic shrimp powder, fish powder, various flavors, spice powder, etc. The quality is better than bait, and the price is more expensive than bait bait.Essence

2. Different quantities used during fishing

The number of bait is large, and the number of bait needs to be used relatively.Because the purpose of the bait is to attract fish and make them stay in the nest for a long time, the large amount is needed, and the bait can only be hung on the fish hook. The amount is far less than the bait.

3. Different purpose of use

The main purpose of using bait is to emit smells, attract fish to hook, and do not let them be full. Good bait can make the fish more appetite in the nest.The purpose of the bait is to let the fish bite the hook, so the bait must not only be exquisite and delicious, but also the size of the size.

2. What are the types of bait?

1. insects

insects are a huge group with a lot of varieties. They are foods that fish love to eat, and they are also good bait used during fishing.Commonly include vegetables, rice worms, moths, flies, red worms, oil gourds, crickets, and bread worms.Regardless of the growth stage of insects, it is a good bait of various fish -like food, which belongs to the preeriented bait.

2. fish and shrimp

Most of the carnivorous fish have the characteristics of fierce nature, large individuals, sufficient energy, and agile action. Their foods are mostly mainly aquatic animals such as fish and shrimp, such as cattle, catfish, gill fish, and gill fish, and gill fish, and gill fish, and gill fish, and gill fish, and gill fish.Dog fish, birdfish, catfish, sea bass, Zheluo fish, big horse fish, tapped red crickets, etc. These fish species are swallowed with smaller fish.As for shrimp, it is also the food and food of carnivorous fish. Whether it is white shrimp, rice shrimp, green shrimp, hair shrimp, long -armed shrimp, shrimp or lobster, as long as these fish are discovered, they will be desperately chased untilIt is also effective to use shrimp as a bait.

3. Clade shell

In addition to fish and shrimp growing in the water, there are many aquatic animals with hard shells, which are also fish like to eat.There is a common feature of these small animals growing in water, that is, there is a heavy fishy, so fish like to eat.These animals include river mussels, river crabs, snails, mussels, mules, oysters, scallops, green crickets, mules, clams, and Shi Shi tongue.

4. vegetables

vegetables commonly used for bait are green vegetables, Chinese cabbage, cabbage, potato, white, lotus root, pumpkin and taro, etc. The bait made of vegetables is not only fresh, but also has fragrant flavor.Class like to eat bait.

5. Commodity bait

In addition to homemade bait, there are also good commercial bait on the market for sale. The fragrance of commercial bait is stronger than the aroma of homemade bait.

Telescope Buy Young Specialty Professional Profession

Telescope choice

Purchase by the environment

If you think of travel at sea or seaside, don't forget to buy a waterproof Telescope.

If you want to go out for tourism, you can buy a small Telescope with a small volume.

If you intend to go to the dangerous areas that can be seen from a distance but not to detect ", you should buy a high -multiples Telescope.

If you want to hunt or travel for a long time, it is best to buy a variable multiples Telescope, which shows how it uses it.Because the changeable Telescope can be gradually adjusted from the low multiplier to the high multiplier, the low multiplier and large field of view should be used for roughly when used, and then carefully observed with a high multiplier and small field of vision.

What are the terminals?

caliber

This is the most important factor when choosing an astronomical Telescope. The primary function of the Telescope is to collect light. No matter how much the magnifying magnification, the better the imaging.The diameter of the Telescope is to expect the glass diameter of the remote mirror or the main lens size, which is represented by millimeters or inch.The greater the diameter, the stronger the ability to collect light, the better the imaging.The larger the diameter, the clearer the details of the picture. For example, when observing a spherical nebula of a M13, a 4 -inch caliber Telescope needs to use 150 power supply, but the 8 -inch caliber Telescope also uses the same ones with the same ones.Power, but Nebula images are 16 times clearer than 4 inches.Even the stars under the weak light can be seen clearly.Considering that the user needs a long -caliber Telescope as much as possible, a large -caliber Telescope.The photos taken by a large -diameter Telescope have higher contrast, better resolution, and clearer.The Cyruster Telescope has "5 -inch caliber", "8 -inch caliber", "14 -inch caliber".

Discerning ability

This involves "Douas restrictions".The distinction between two tight twins, theoretically the ability to distinguish the Telescope is determined by 4.56 to remove the caliber of the Telescope.For example: a resolution ability with a diameter of 8 -inch is 0.6 (4.56/8 = 0.6) that directly affects the distinguishing ability of the Telescope is the caliber of the Telescope. Therefore, the larger the Telescope, the better the resolution ability.However, the ability to distinguish also depends on the influence of the atmosphere and the acuity of people observing objects.

Pupil diameter

The diameter of the pupil is a circular beam that appears in the case of a Telescope without eyepiece, which is represented by mm (millimeters).Calculate the diameter of the pupil, for example: a Telescope with a diameter of 8 inches (203mm), uses a zoom distance of 20mm eyepiece to place 102 times large, and the pupil diameter is 2mm (203/102 = 2mm).Or you can also use the focus of the Telescope to remove the diameter of the pupil with the focal length of the eye mirror.

Extreme Star et al.

Astronomers use a star and other systems to explain the level of bright stars. A star body is considered to have a certain star. The higher the level, the darker the star.The value of the stars) is about 2.5 times the stars. The darkest star body that you can see with your naked eye is about six -class stars (in the night sky). On the contrary, the brightest star is 0 and the stars (orEven negative values).See the darkest star body with a Telescope (the best time in various environments), that is, the extreme star, etc., the extreme star, etc. directly depends on the caliber of the Telescope.EssenceRoughly calculating the formula of Extreme Star is: 7.5 5 LOG (represented by CM).For example: The extreme star with a diameter of 8 inches is 14.0 (7.5 5 log 20.32 = 7.5 (5x1.3) = 14.0).The situation of the atmosphere and the visual acuity of the observer will have an impact on extreme stars.Shooting extreme stars is about two or more than visual limit stars.

Vision

The range you can see when you observe the sky through a Telescope is the field of view, which is represented by an arc angle.The larger the view of the field of view, the greater the observation range. The calculation formula of the perspective angle is that the perspective angle of the eyepiece used is except the finger of the magnification of the Telescope.For example: If the eyepiece you use is 50 degrees, and the Telescope used with the mirror and the magnification of the eyepiece is 100X, then the visual field of the Telescope is 0.5 degrees (50/100 = 0.5).Born manufacturers usually specify the corners of their eyepiece. In general, the larger the viewing corner, the larger the view of the field of vision, because the more you see when you observe the starry sky. In addition, the more, Using a low -magnification astronomical Telescope is wider than seeing the high magnification.

1. What are the functions of multi -functional Outdoor camp lamps?

Camping lights, also known as wild Camping lamps, are lamps used during Outdoor Camping. They mainly have a lighting effect. With the development of the Camping market, the current Camping lights are becoming stronger and more powerful, with multifunctional Outdoor Camping lights.In addition to lighting, the functions of multi -function Camping lights also mainly include:

1. mobile power function

Many Camping lights can be used as a charging treasure. If the mobile phone is out of power in the wild, it can temporarily charge the mobile phone for emergency.

2. lighting function

Not only can the lightness be adjusted according to the weather conditions, but also the function of regulating the color of Camping lights. Generally, it is adjusted to red. When the red light is high, it can reduce the harassment of the wild mosquito when protecting the dark vision effect of the people;When flashing, it can be used as a security warning signal light.

3. Remote control function

Now some high -end wild Camping lights can be controlled remotely. Without a Tent or sleeping bag, you can turn off or turn on Outdoor Camping lights far from.

4. Solar charging function

Camping lights with Solar charging functions are usually equipped with Solar charging boards. They can use solar energy charging during the day. The source of electricity sources is environmentally friendly and pollution -free, and there is no need to worry about exhaustion of power.

5. Fan Function

When Camping, if the temperature is high, it is also necessary to carry a fan. It is inevitable that some cumulative Lights can be used as a fan.

2. Is it necessary to buy a multi -function Camping light?

Most of the Camping lights are relatively single. There are some Camping lights with more functions, but the price is relatively expensive. Many friends think that it is not necessary to buy it. Is it necessary to buy multi -functional Camping lights?

Generally speaking, Camping lights can be bought for ordinary models, or multi -functional models. Although multi -functional Camping lights are higher in price, it can achieve one thing and multi -purpose function. For the weight of camping equipment, do it.The lightweight of the Camping is very helpful; of course, after all, multi -functional Camping lights are not as good as special mobile power, fan, etc. If possible, such as driving Camping, buying ordinary Camping lights is enough.