For this reason, the competent departments of agriculture and forestry in many places have issued various measures to require farmers to do a good job in the prevention and remediation of crops in order to deal with the “late spring cold.” For example, for the vegetable greenhouse, the relevant departments stipulate that “when the temperature in the greenhouse is below 0 ℃ for a long time, straw bags, non-woven cloth, sunshade net and other mulch should be added in the greenhouse at night to prevent frost injury and take basin fire or fire temporary heating. At the same time, open fire can not be used when heating to prevent smoke damage, it is necessary to set up a flue to discharge harmful gases outdoors. Strengthen the coverage in time to promote heat preservation and anti-freezing. ”
Yibin curtain wall aluminum veneer manufacturers add external sunshade, awning and properly add the length of southward balcony can play a certain role in shading. A heat-reflecting fabric window cloth plated with metal film is arranged on the inside of the window, and the front has the function of decoration.
For outdoor swimming, it is best to use a sunshade after landing, or go to a shady place to rest, or use a bath towel to protect the skin, or apply sunscreen in the exposed parts of the body. You should wipe off the scale with a soft dry towel immediately after swimming, preferably rinsing with fresh water. If there is water in the ear, one foot can be used to “jump on the same side” to discharge the water. After that, do a few relaxation exercises and body massages, or take a 15-minute nap in the sun for 20 minutes to avoid muscle rigidity and fatigue.
The key points of the building ecological energy strategy and design for the renovation of the new German parliament building lie in the technical application and energy strategy of ventilation and lighting. After the reconstruction, the output of carbon dioxide in the building has been reduced by nearly 94%. Through the set path, the air is filtered and cooled into the building, and then the hot air and waste gas are discharged upward by the two-story dome through the building technology; natural lighting is realized by an inverted cone light reflector and a 360-degree tongue-shaped sunshade device, which is equipped with an air pipe and a heat converter, and the tongue-shaped device can rotate according to the change of the solar height angle during the day. The energy strategy adopted in the reconstruction of the building is more radical, including not only the use of solar power, but also the use of renewable “biodiesel” generators to generate electricity, coupled with the storage and recycling of geothermal heat.
According to the low orbit altitude and the geometric model of the satellite, we have designed a radio frequency permeable sunshade for the satellite, which can prevent light from reaching all the diffuse parts of most satellite bodies and bodies. The visor is laid flat on the chassis during launch and unfolded during satellite separation from Falcon 9. The sunscreen completely blocks the light from reaching the antenna, thus preventing the light from being reflected from the diffuse antenna. This method not only avoids the thermal effect of the darkening of the antenna surface, but also has a greater impact on the brightness reduction. As mentioned earlier, the first VisorSat prototype was launched with the eighth batch of star chains, and we will install these black mirror sunshades on all satellites after June.
The two symmetrical circular instruments under the sunshade arch of the first dashboard are simple and clear, while under the sunshade arch of the second dashboard is a large liquid crystal display screen to display satellite navigation, reversing radar, entertainment systems and various driving information. Due to the use of i-drive information control system, the center console looks very regular, not so many complicated buttons and knobs.
The first choice to block the sun, of course, is the sunshade, but it has a certain impact on the line of sight. The second is to propose explosion-proof film and solar film. The most practical thing is to buy a polarizer for the driver. But with polarizer to remember one, suddenly enter the tunnel or parking lot and other dark areas should pay attention to safety.
●?? One is to clear the ditch and reduce dampness. Clean up the ditches in time to reduce the field humidity and prevent waterlogging damage caused by stagnant water in the field; the whole bed in the greenhouse is covered with plastic film, and the ditch is covered with dry straw to reduce the humidity in the greenhouse. The second is to keep warm against the cold. Pay attention to the heat preservation of vegetables, check the leakage of the greenhouse film, close the shed at the right time in the morning and evening, properly uncover the film and ventilation when the temperature is high, adjust the temperature and humidity in the shed, and increase the light. Open-field vegetables can be tied around the waist, floating surface covering sunshade net, straw and other anti-freezing. Third, strengthen management. Do a good job in pruning vegetables in the field, beating leaves, hanging vines, fertilizing, cultivating soil and so on. Fourth, post-disaster management. After the freezing weather of rain and snow, timely ventilation and humidity drop, spraying to prevent disease, frostbite disease cleaning and other measures, strict control of watering, sunny weather should pay attention to timely return to the curtain to prevent plant seedlings from withering and dying.
It is precisely because of this application advantage that the products of agricultural film manufacturers will be recognized by consumers and are widely used in agricultural planting, and its application effect is still very good. Users from all walks of life are sincerely welcome to visit us. The heat preservation performance of agricultural film is poor, especially the noon temperature in summer and autumn is easy to be too high, so it is necessary to do a good job of cooling: suitable for feeding wet leaves. It is easy to cause mulberry leaf withering after high temperature and ventilation in the shed. Wet leaves can be fed at noon on a sunny day and air spray with effective chlorine concentration bleaching solution is used to replenish moisture and prevent disease. Increase ventilation. After sunrise on a sunny day, open the film on both sides of the greenhouse for ventilation, and put down the film on both sides to keep warm when the temperature in the shed drops below the suitable temperature for feeding in the evening. When the temperature is high, ventilate day and night. Put down the sunshade net on both sides of the greenhouse on rainy days and lift the film on both sides of the greenhouse to facilitate ventilation.