1. How bright the street lights in the residential area are suitable

The brightness adjustment of the community street lights is a big problem, mainly because the street lights are too bright, which will cause residents on low floors to feel dazzling, and the light pollution is more serious. If the street lights are too dark, it will affect the night travel of the community.In the accident, the thief is easy to make a crime, so how much is the street lights in the residential area?

In fact, my country has clearly stipulated the brightness standards for street lights in residential areas. According to the "Urban Road lighting design Standards", the road of community roads should be about 20-30LX, that is, people can be 5 See clearly within 10 meters.The lack of lighting in some communities is mainly due to the reduction of lighting requirements in order to save costs and electricity.In addition, when designing the street lighting, the support of the branch road is narrow and distributed between the residential buildings. The uniformity of street light lighting needs to be considered. Generally, it is recommended to use unilateral layout lamps to light up lighting.

2. Requirements for the installation specifications of community street lights

1. Light type

The width of the community roads is generally 3-5 meters. Considering the illumination factors and convenient maintenance of the community. Generally, the courtyard Lights between 2.5 and 4 meters in the community are used to light up.Personnel can quickly repair.In addition, courtyard Lights can pursue the beauty of the overall lamp according to the architectural style and environmental atmosphere of the community and beautify the community.

In addition, the shape of the street lights should also be simple and Smooth, and there should not be too many decorations. If there are large -area lawns and short flowers in the community, you can also consider using some lawn Lights.

2. Light source

Unlike the high -pressure sodium lamp commonly used in main road lighting, the main light sources used in community lighting are metal halide lamps. Gold halogen lamps with cold -colored light can create a sense of quietness, which can make the entire community feel layered and create low -floor residents for low -floors residents.A soft Outdoor environment, avoiding light pollution at night at night.

Community lighting also needs to consider vehicle factors, but the vehicles in the community are not like the vehicles on the main road, generally slow, so the pursuit of uniformity in brightness is not high.The brightness of the lamp area is relatively high, while the brightness in other places is low.

3. Light position arrangement

Due to the complexity of the roads in the community, there are many intersections, and there are many splits, the lighting of the community should have a good visual orientation, and unilaterally arrange it;Side layout.

In addition, when conducting community lighting design, we should pay attention to avoiding the impact of Outdoor lighting on the indoor environment of the residents. The lamp position should not be too close to the balcony and windows, and it should be arranged in the green Belt on the side of the road.

4. Power distribution settings

For residential communities with a small area, the lighting distribution box is generally located in the center of the community and sent electricity to the surrounding area. It is a central radiation type. The lines are not long, but there are more bits.Multiple ways to send electricity can not only solve the loss of voltage reduction, but also facilitate future pipeline maintenance, but the cost is slightly higher.

After the street light supply power distribution point is connected to the control cable, it can be controlled by the street light control network. It can also be equipped with control devices such as wireless Sanyao.

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 effective. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt;Correction & gt; & gt;

1. Why do you wear sports sleeves when playing basketball

When watching basketball games, careful friends will find that some basketball players will wear cuffs on the arm of the armor. The cuff is also known as a sports Sleeve and basketball arm. Wearing basketball sleeves is mainly to protect the armsWhen playing basketball confrontation, it is easy to strain the muscles. The Sleeve cover can help compress and protect the muscles and reduce damage. When falling on the ground, the Sleeve cover also has an cushioning effect on the elbow.The role is relatively large:

1. Fixed shooting posture

Powerful orientation telescopic makes the shot aids difficult to bias.

2. Compressed muscles

Apply pressure to the specific parts of the body, and use the characteristics of blood circulation to maximize oxygen absorption to help basketball players fight fatigue and reduce the risk of damage.

3. Quickly sweat

basketball sleeves can spread and discharge sweat and moisture quickly, reduce the temperature of the body, and control the body temperature on the human Skin to ensure the best state during exercise.

4. Anti -UV sunscreen

basketball sleeves also have sunscreen functions. Playing basketball in indoor venues may not be needed. However, in the Outdoor basketball court, wearing sports sleeves can also fight ultraviolet rays and avoid arms sunburn.

In addition, sports Sleeve sleeves also have a certain decorative effect, so many friends who play basketball will wear Sleeve sleeves and then play basketball.

2. How to wear basketball Sleeve

The wear method of basketball Sleeve is not difficult, similar to the wearing method of ordinary sunscreen sleeves, but in order to not reduce the effect of sports, generally only one Sleeve cover is usually worn.It is right -handed, so it is generally worn on the right hand. It can completely tie up your muscles when you can get dribble, shoot, and layup to achieve better results.

1. How much is a pair of training shoes

training shoes are a must -have equipment for each sports enthusiast. Choosing a pair of suitable training shoes can not only improve sports performance, but also effectively protect your feet and reduce sports damage.So how much is a pair of training shoes?

Generally speaking, the price of training shoes of ordinary brands ranges from hundreds of yuan, and the price of some well -known brands or high -end models may reach thousands of yuan, and you can choose according to your needs.

2. Types of training shoes

1. According to the material

(1) Natural leather: such as cowhide, sheepskin, pork leather, etc., it has the advantages of softness, breathability, warmth, folding, durable, etc.

(2) Synthetic leather: A plastic product that simulates natural leather is usually made of impregnated non -woven fabric as a mesh layer, and the microre polyurethane layer is made of grain layer.And have a certain breathability.

(3) Factory material: usually uses flying weaving technology to form a soft, comfortable and breathable upper. It has the characteristics of lightweight and comfortable, and has good elasticity, toughness and wrapping.

2. divide by function

(1) Shock -absorbing training shoes: This type of training shoes is mainly designed for people with heavy weight or inner feet.They absorb the impact of heels and Running movements through special sole design and structure, thereby reducing the impact and injury risk of feet during Running.The external characteristics of this type of shoes are the thickness of the arch of the foot, and the weight of the shoes is medium.

(2) Captive training shoes: The design of this training shoes is to provide good ground grip and stability, suitable for wear during training that needs to maintain balance and stability, such as squatting, hard pull, etc.During strength training.

(3) Stable support training shoes: designed for people who need to strengthen foot stability.This shoe usually has a special sole structure and a strong outer support to help prevent the foot from excessive internal or external rotation.This can reduce the risk of injury and help improve the efficiency of Running or training.

3. How to choose training shoes

1. sports:Different sports require different types of shoes.For example, running shoes emphasize buffer and shock absorption, basketball shoes focus on non -slip and side stable support, and strength training shoes are stable.Learn about your main exercise, and choose the corresponding shoe type.

2. Material

(1) The soles of training shoes should have the functions of shock absorption, support and abrasion to meet the needs of different training intensity and amount of exercise.Some elastic and buffer properties, such as rubber, EVA, can provide better support and cushioning effects.

(2) The upper of the training shoes should be breathable, wear -resistant and supportive to maintain the dryness and comfort of the feet.The mesh material can provide good breathability, while the leather material can provide better support and wear resistance.

3. Foot type:Know your own foot type, such as normal foot, high arch or flat foot.Those who are high -footed should choose shoes that emphasize shock absorption. Those with flat -footed feet need to support shoes with strong functions.

4, shoe number:When trying it on, you should wear sports socks and leave enough space to ensure that the shoes are fitted during exercise.

5. Back help:After selecting the shoes, help the shoes that are hard enough to make the sides of the heels reliable to prevent shaking during exercise.

6, middle and front shoe soles:According to the needs of sports, select shoes with appropriate hardness of the middle and front soles.

7. Life life:Pay attention to the service life of the shoes and replace the deformation or decreased shoes in time.

8. Personal needs:Considering personal needs, such as support, stability, control, buffer, shock absorption, rebound, anti -slip, sweat, breathable, antibacterial, deodorization, wear resistance, balance, lightweight, grip, correction and other functions.

[Semiconductor Cold Warm Box] Four Questions and Answers on Cold and Warm Boxes on car Cold Box on car Cold Box

In the current domestic market, there are as many companies that produce car refrigerators. Many small manufacturers, cut corners when they produce products, have a bad cooling and heat -making effect. If it is not used properly, it may cause damage to the car battery. ThereforeFriends must choose carefully.Many friends who do not know how to choose the car warm and warm box, they all have such questions, Xiaobian will give answers one by one here!

First, can the car warm and warm box make ice?

If you want to know if you can make ice in the car, you must first figure out its working principle.At present, the most car warm and warm boxes on the market are actually used to refrigerate with semiconductor materials. This material uses the Partia effect to work (please Baidu for children's shoes that do not understand), so the cooling effect may be worse than the compressor.Some, but this does not mean that the car warm and warm box cannot be made of ice.Some manufacturers' products, such as Deng Lupu's car warm and warm box, can still use the powerful refrigeration effect to make ice as long as they are equipped with an ice box and a partition.

Second, what are the attention of the Car refrigerator in daily use?

Many of the car refrigerators need to pay attention in daily use. First of all, it must be kept clean, especially at the ventilated port, because the heat inside the refrigerator is released here, and it will be troublesome if it is blocked.There are also daily cleaning and scrubbing with neutral soap and wet cloth. Do not insert electricity.The second is about temperature. It is best not to put very hot food into the Car refrigerator. In addition, because the power of the Car refrigerator is small, the refrigeration effect will not be as goodDrinking ice cold drinks when walking, it is recommended to refrigerate in the refrigerator first, and then put it in the Car refrigerator, which will be much better.

Third, will the Car refrigerator hurt the car battery?

Of course not.The power of the Car refrigerator is very small and generally does not exceed 100W. Such a small power cannot cause damage to the car battery.However, the owner should also pay attention to the daily use that the ordinary car thermal box, it is best not to use it for a long time after the car is stopped, which may cause the battery to put it.Therefore, when buying consumers, pay attention to choosing products with low -pressure protection functions, so that if you accidentally forget to pull out the cigarette barrel, it will not cause the car battery to put it.

Fourth, can the Car refrigerator be used at home?

Yes, but you need to be equipped with a home power converter.The function of the household power converter is to convert the voltage of 220V into a 12V voltage. With this thing, it can be used.

car warm and warm box

The car warm and warm box uses electronic refrigeration and heating technology, which is polluted and environmentally friendly. It can be placed on a seat or floor in the car. You can easily and conveniently put food at will. It has dual functions of refrigeration and heat.

It specially involves suitable for car supporting. It includes the main body of the warm and warm box, the tray, and the two -way plug. The main body of the warm and warm box is provided with semiconductor refrigeration elements. The main body of the warm and warm box is set on the tray., Double -directional power plug is inserted in the jack of the igniter.The product power supply is convenient. As long as the power plug is changed to the positive and negative polarity, the cold and warm box can achieve the effect of refrigerating or heating. In summer, cooling and warm in winter.People can heat cool drinks at any time during their journey.

Feature characteristic

With the dual function of refrigeration and thermal heat, it is very convenient to use, and it also increases the aesthetic effect in the car. It is suitable for use in long -distance travel, solving the problem of freshness, refrigeration, and heating of food and food during the operation of the company.The structure of the existing car body.Save space in the car, convenient and practical

Use

Cross the cigarette lighter plug with the car warm and warm box, and you can directly connect the car cigarette lighter. You do nt need to install it simply. You can choose the corresponding LED indicator light according to the cooling requirements.Heating, in order to achieve the ideal heating or refrigeration effect, preheat or refrigerate before putting food or drinks.Equipped with hot and cold conversion switch to adjust the hot and cold function.It is also suitable for workplace, Picnic, school, long -distance travel, Camping, party, beach and other places.