What does surfing mean

The surfing movement is a water movement that athletes stand on the surfing plate, or use the abdominal plate, Kneeling plate, inflatable rubber pads, kayak, kayak, etc. to control the waves.

Origin of surfing

surfing originated from the Polynesia Islands in the Pacific Ocean. The earliest surfing board was made by wood and all boards were free of fin.surfing has since developed and continued in Hawaii.

Principles of surfing

The sea breeze transferred the energy to the waves, causing the waves to surge, and the gravity effect of the sea water tried to allow the sea surface to restore the calm and quiet state. Therefore, the water particles began to squeeze each other to produce pressure inside the sea.

When the waves gradually approach the surfing board, turning the waves in the same direction as the waves, and try their best to catch up with the speed of the waves. The surfboard and water form an angle. Just surf.

What are the natural conditions of surfing

The surfing movement takes the waves as the power, and it must be carried out on the seaside with storms.The height of the waves is about 1 meter, the minimum is not less than 30 cm.

Is the surfing fun?

Of course, surfing is fun!surfing can bring you a unique pleasure. It allows you to relax your body and mind, let go of your mind, and feel the charm of more waves. This is not comparable to no exercise!surfing is the most suitable for a person's movement. It allows you to experience the joy of freedom. In the rhythm of the waves, you can feel the joy of freedom!surfing can also bring you a challenge to challenge yourself. Although learning is difficult, once you learn and drive in the waves, you will feel a great sense of accomplishment!

Is the surfing dangerous?

There is indeed a certain danger when surfing.

1. Be careful of the threat of marine life

Shark is a dangerous marine life that we often hear, and there are not many cases of shark attacks every year.Instead, for creature such as sea urchin and jellyfish, it is the most likely to hurt surfing. After being stung by jellyfish, if the situation is serious, it can be fatal.

2. Be careful of drowning

This is a certain problem when surfing. Although it is said that ordinary drowning incidents, this is rarely happened under normal circumstances, but there will also be surfing boards. At this time, it will not cause drowning problems. , But if the waves are large, the waves are relatively large, then the surfing board is easy to be washed away. At this time, it is undoubtedly prone to drowning problems, and when surfing It is better to launch the water. If you encounter an emergency, someone can help.

3. Be careful about the undercurrent

For those who surf and swimming, there will actually be fatal and dangerous, because the existence of the undercurrent will allow us to drift a long distance between seconds.And for most people who can swim, when we encounter dark current in the sea, it is easy to harm health.

4. Be careful

The beach waves are relatively safer, and unless the waves are large, it will affect our health, but the situation of the reef waves is completely different, because under the wave area, the reef existence After that, if we accidentally hit the reef, it will cause very serious situations at this time, so it is not recommended that everyone go to these places to surf.

What is the fishing sun umbrella

With the development of China's economy and the improvement of people's living standards, there are more and more fishing enthusiasts across the country, and the equipment used is becoming more and more diverse and high -end. fishing Solar umbrellas have gradually appeared in people's vision.fishing Solar umbrellas are mainly used for sunshade, rain, and windproof during fishing. It is transformed from beach umbrellas and British tents, which can adapt to various fishing environments.The fishing Solar umbrella generally use aluminum alloy and fiber material to reduce the weight of the umbrella. In order to prevent wind, it will also be equipped with windproof, air -permeable and other parts, which is very practical.

At present, fishing Solar umbrellas do not have a unified official production standard. According to the provisions of the main manufacturers in the industry, it is roughly 1.8 meters, 2 meters, and 2.2 meters from the diameter of the umbrella surface (considering the curvature).Divided from the fabric, including polyester, rubber cloth, etc.From the umbrella frame, there are Masha rods, galvanized rods, aluminum rods, etc.In the style, some have a opening to facilitate the starting pole.Some have the function of double umbrellas, and they have a beautiful ventilation and breathable shape.It can be said that people's pursuit of fishing umbrellas has not only stayed in functional. A beautifully styled and advanced fishing umbrella reflects the level of appreciation and enjoyment of the variety of life and fishing culture.

The fishing sun umbrella is easy to carry, strong and durable, wind -proof, rainproof and anti -ultraviolet rays, and beautiful shapes. It is the future development trend. The current fishing umbrella needs to be improved in terms of waterproofing.Need to rely on new materials and new processes to solve and improve product quality.One of the later juniors of the family members of the fishing Solar umbrella as an umbrella, there is still a lot of room for development.

How to buy the right fishing sun umbrella?

1. fabric material

One of the attention to buying a fishing tools is the anti -ultraviolet performance of the fabric fiber itself. Among the fibrous fibers, the fishing anti -ultraviolet effect of fishing umbrellas made of polyester fiber is relatively good.Therefore, when you buy fishing umbrellas, you should pay attention to see the materials on the label. You should try to use polyester fiber to make fishing umbrellas.

2. The knitted density of the fabric

The tightness and thickness of the fabric will affect its anti -ultraviolet performance.The thicker the fabric, the better the anti -ultraviolet performance, and the closer the fabric, the stronger the light power, the smaller the ultraviolet rays through.Kidtop fabrics are usually loose than machine fabrics, so the protection effect is not as good as that of the fabric. The gap between the flat fabric in the fabric is greater than the oblique pattern, and the oblique pattern is greater than the satin, so the protection effect of the flat lines is relatively poor.Another thing to pay attention to is the color of the fabric.The darker the color of the fabric, the smaller the ultraviolet transmission rate, the better the anti -ultraviolet performance.Therefore, when we choose the Parasol, we must fully consider the thickness, tightness and color of the fabric.

1. What are the raw materials for mechanical charcoal

Mechanism charcoal, aliasing mechanism charcoal, artificial charcoal, recycled charcoal, smoke -free cleaning charcoal, is a charcoal rod -shaped material squeezed by wood squeezing materials. Internationally, it is publicly regarded as green and environmentally friendly products.The density of mechanism charcoal is close to coal, which is more than three times that of ordinary charcoal, and smokeless when burning. It is mostly used for barbecue charcoal. Industry can also be used in the production of mi -molized charcoal and steel smelting or serving as boiler supplementary fuels.

The raw materials of the mechanism of charcoal have a wide range of raw materials, and the rice shells, peanuts, cotton shells, corn cores, corn stalks, sorghum stalks, bean stalks, sawdust, wood chips, granular shells, coconut shells, and coconut shells can be used to produce mechanism charcoal., Shave, bamboo dandruff, and rice shell are relatively good production materials.

2. How can the mechanical charcoal be ignited quickly

Mechanical charcoal ignition takes a certain time. If you master the correct method, you can shorten the time. The ignition method of the mechanism of charcoal is:

1. Flexible solid fuel block

Although liquid alcohol and gasoline fire quickly, it is not safe and the cost is relatively high, and the solid fuel block is much more convenient. Generally, it can be purchased from outdoor products, barbecue restaurants or sales of charcoal.You can buy online.By fire with solid fuel blocks, pay attention to ventilation. First, smash some small pieces of mechanism charcoal, and then find some small wooden sticks to put it into a shelf, put the mechanism charcoal, and wait for the wooden blocks to be flickered after the wooden block is completely burned.

2. Blind charcoal

The fire charcoal is specially used for fire, which is particularly easy to burn, but the disadvantage is that it is large, it is easy to stain the hand, and the price is not cheap, and the practicality is not very strong.

3. Wooden block fire

Just find some pine blocks and bamboo sticks, split into small pieces and stack it, leave a little gap, then lit the wooden blocks below, and put a few mechanism charcoal.It should be noted that artificial synthetic materials such as plywood should be used to avoid harm of chemical release.

4, point charcoal stove

It is specially used to give the mechanism for charcoal and round charcoal. The carbon method is to ignite the liquefied gas.

Reminder: Don't forget to prepare a bucket of water or fire extinguisher when igniting to avoid accidents.

Third, the mechanism of charcoal and fruit charcoal is better

1. fruit charcoal

fruit charcoal is the fuel that has been burned, distilled and other processes after the logging of the log, and the common fruit charcoal on the market has apple wood and litchi wood. The advantage is that it is easy to ignite.Taste, the taste of baked is particularly fragrant.

2. Mechanical charcoal

Mechanical charcoal is a charcoal made of charcoal machine. Because the carbon content of the mechanism is high, the density is large, and it belongs to waste use. Therefore, compared with the fruit charcoal, the mechanism charcoal is higher temperature, combustion -resistant, and environmental protection.The disadvantage is that the ignition point is high, it is difficult to ignite, and it is easy to fire.

In general, these two types of charcoal have their own advantages and disadvantages. When barbecue, you can choose according to the grilled ingredients: if you bake things are vegetables, you need to brush a lot of oil, then Maigoo Xiaobian recommends that you use fruit with fruit.charcoal, because the temperature of fruit charcoal is lower, the oil droplets are not easy to get angry; if it is baked, it is recommended to use mechanism charcoal, such as roasted whole sheep, because the mechanism of charcoal is high -temperature flame -resistant, and the efficiency is higher.

1. How long can tennis shoes usually wear

Because the tennis courts are mostly hard ground venues, the ground is relatively rough, though tennis shoes are more resistant and wear -resistant, they are still very easy to wear.It is normal for people who often play tennis. It is normal to wear a pair of tennis shoes from February to June. It is not that the service life of tennis shoes that often play is generally about one year to a year and a half.

Observing your own soles of the shoe can also judge what problems when playing. For example, the soles of tennis shoes are usually worn from the toe.The pace of tennis is based on the toe gripping ground, and is preparing to move and hit the ball.When moving in real time, there is also a situation where the heel is needed first, but in the end, it is necessary to kick the ball (front foot) to complete the hit.If the soles of tennis shoes are worn from the heels, it shows that the basic footwork and force are still stable.Some people's soles are worn from the toes of the right foot.This is caused by gathels to the left leg when serving, and the right foot toe finally kick the ground when the right foot is hit.Because of the powerful grip (kicking), the soles will be worn from this part, and the soles of professional players are the same.

2. Under what circumstances do tennis shoes need to be replaced

The detachment, wrapping and supporting indicators of tennis shoes are limited to exercise time and exercise strength.After the length and strength of the design accumulate, even if the sneakers are not very obvious, their various properties will be discounted.The following situations need to be replaced with tennis shoes:

1. Look at the sole:If the heels of tennis shoes have obvious arcs and the soles or signs are blurred, they should not hesitate to replace it.

2. Look at the shape of the shoes:If the tip of the shoe of tennis shoes is tilted up too much, or the heels collapse from the inside, it should also be replaced.

3. Look at the physical response:If you wear a pair of tennis shoes for a while, you feel that the ankle joint, knee joint, or waist is a little uncomfortable or even painful, which means that these shoes are not suitable for you, and if a pair of shoes have become twisted with your feet,This should be replaced.

1. Solar street light installation method

Solar street lights have the advantages of good stability, long life, high luminous efficiency, easy installation and maintenance, high safety performance, energy saving and environmental protection, economic and practical, etc. It is widely used in the field of public power lighting. So how to install Solar street lights?

1. Pour the foundation

(1) Establish the installation location, and according to the construction drawings and the geology of the survey site, there is no shade at the top of the street light, and the lamp spacing is 40 meters as the benchmark to determine the installation location of Solar street lights.

(2) Digging road lamp foundation pit, excavate the lamp base pit in the installation location, and pay attention to confirming and protecting other facilities such as cables, pipelines and other facilities in the excavated location when digging the foundation pit.

(3) Burn the battery and build a battery box in the dug foundation pit and bury the battery box into it.

(4) Basic embedded parts of the pouring street lights, place the embedded parts of the Solar street lights into the pit, put one end of the wire Tube in the middle of the embedded parts, and the other end is placed at the buried battery.And keep the embedded parts, foundation, and ground on the same horizontal plane, and use C20 concrete to fix the embedded parts.

(5) After the construction is completed, clean up the residue on the positioning board in time. After the concrete is solidified, the Solar street lights are installed.

2. The installation method of Solar street light components

(1) Install Solar panels: Put the Solar panel on the battery plate bracket, tighten it with a screw, connect the output line of the Solar panel, pay attention to connect the positive and negative pole of the correct battery board, and use the output line of the battery plate to use it with tie the battery board.Turn it in a firm, tinten tinten on the battery panel wiring, and then put it aside to wait for the thread.

(2) Install LED lamps: Put the light line out of the light arm, leave a lamp line at one end of the installation head; support the light pole and wear the other end of the light line from the slide hole reserved by the light rod.Out, install the light line to one end of the top of the light pole; install the lamp head at the other end of the light line, align the screw holes on the light arm and the light rod, and then tighten the light arm with a quickly wrench;Put on the top of the top of the light rod to make a mark. Together with the Solar panel thread wiring, put the two wires together on the bottom of the light rod with a thin thread Tube, and fix the Solar panel on the light rod.

(3) Lantern rod Hanging: After checking the fixed conditions of each component, put the sling rope in the appropriate position of the light rod, slowly roll up the lamps, and when the light rod is lifted to the front of the base, slowly put down the light pole and rotate the light pole at the same time.Adjust the lamp head to the pavement, and the holes on the flange plate are aimed at the foot bolts; after the flange plate falls on the foundation, put the flat pad, spring pad, and nuts in turn, and tighten the nut with a wrench to fix the light pole.

(4) Install the battery and controller: Put the battery in the battery shaft and put the battery thread on the road base with fine iron; then connect the connection line to the controller, first connect to the battery, then the load, and then connect to the Solar board; debugging; debugging;Whether the street light work is normal. If it is normal, set the controller mode to make the street light light up. If there is no problem, you can seal the lamp cover of the light rod.

3. Component adjustment and secondary embedding

After the installation of Solar street lights is completed, check the installation effect of the overall street lights, re -adjust the light rods, and check whether the rising angle of the battery board is deviated, whether the light head is legitimate, etc.;The base is embedded in a secondary embedding, and the base of the light rod is made into a small Square with a cement to make the Solar street light more firm and reliable.

2. What should you pay attention to when installing Solar lighting street lights

Solar lighting street lights can save energy and relieve energy consumption. It is a very practical type of new street lights. However, when installing Solar street lights, you should also pay attention to some aspects, such as:

1. installation location

Try to avoid installation in the low -lying road sections of the road. Pay attention to whether the installation location is to fill the soil when pouring. If it is backfill, the basic pit should be deepened and increased, so as to ensure the stability of the later use of Solar street lights.

2. installation time

The installation of Solar street lights should be installed on a sunny day. If it is installed on a rainy day, it will not be able to meet the design requirements after the light consumes power and does not charge it. Also, try not to light up the Lights on the day of the installation.After the electricity, the load is connected in the evening.

3. The angle of the battery board

The brackets of Solar panels are generally made before the factory. As long as you ensure that you can facing the south and ensure that there is no obscuration around, if the deviation is large, you may need to be adjusted.

4. Pay attention to wiring

Solar street lights are low -voltage systems. When wiring, it is mainly to distinguish between positive and negative electrodes. After determining the positive and negative electrode of the battery plate, light source, and battery, it is necessary to strictly follow the wiring description of the controller.