From the analysis of the environmental factors closely related to plant growth in greenhouse project, different temperature and humidity will have a direct impact on plant growth. Therefore, how to meet the requirements of different crop growth environment has become the main way to improve the production potential of greenhouse and realize factory planting. The intelligent greenhouse control system can not only monitor the internal environmental data of the greenhouse, set the upper and lower values of various environmental indicators, and remind managers of the abnormal situation of the greenhouse environment, but also work together by controlling the external sunshade, internal shading, internal thermal insulation, top natural ventilation system, fan water curtain forced cooling system, heating system and so on, so as to make the internal environment of the greenhouse within the scope of our design.
For me, having passed the age of several convenience store sandwiches and a dozen cold beers to lie on the grass all afternoon, it is not a waste of time for a picnic to meet at least four points: “sitting comfortably, sunshade in place, room for things, and drinks and beer cold enough”.
Chengmai County, Hainan-supplying diesel oil (Lingshui County News) at present, spray-free plastic has been successfully used in side skirts, central control panels, DVD panels, glove boxes, sunshades, dashboards and other auto parts in the automotive field. Bioplastics bioplastics are produced by using original plants as raw materials, such as sugar cane and corn, under the action of microorganisms. Commonly used plastics are generally synthesized from petroleum products, which are often harmful to small molecules that do not fully react, while bioplastics are prepared into automobile interior parts for VOCs volatilization in large vehicles because of the use of renewable raw materials with low toxicity and low harm. In addition, this bioplastic can be decomposed to facilitate subsequent recycling, so it is a more environmentally friendly type of plastic.
1. The structure of the window should be able to control sunlight exposure and limit the area ratio of the window wall. For buildings with larger window area, endothermic glass, heat reflection glass or shading measures should be considered, such as sunshade panels, eaves, eaves, balconies, blinds, curtains and so on. Natural air can be directly used as a source of energy when the outdoor temperature is low, so the structure of the window should be able to open or set a natural vent on it.
Car umbrellas are useful. According to the sunscreen principle and the shape of the car, the car sunshade covers from the front windshield to the rear windshield. The sun umbrella which can effectively reduce the temperature rise in the car when parking at high temperature is called car sunshade.
Rear bumper, dashboard, etc. Body and body parts: body shell, hard shell roof, floor, door, radiator grille, front end plate, flow stopper, baggage warehouse cover, sunshade, wing panel, engine cover, headlamp mirror, etc. Parts under the engine cover: air conditioner shell, air guide cover, intake pipe cover, fan guide ring, heater cover, water tank components, braking system components, battery bracket, engine sound insulation board and so on. Interior decoration parts: door interior panel, door handle, dashboard, steering rod parts, mirror frame, seat and so on. Such as pump cover and other electrical components and gear sound insulation board and other drive system parts. Suspension parts: front.
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. ”
The Harvard H1 is equipped with a two-color interior with a bucket dashboard and three sports multi-function steering wheels, and the vehicle interior highlights its sports characteristics. Glasses case is added to the driving side of the sharp front, decorative strips are added to the dashboard to cover the sunshade, and lights are added.
Of course, the cooling work of the greenhouse in summer can not rely entirely on the greenhouse insulation quilt, but also should take some other measures accordingly. Can cooperate with enhanced ventilation to cool down, but it should be noted that it is best to set up a wind shield in the tuyere to avoid the cold wind blowing directly on vegetable and fruit noodles; you can also use a sunshade net to cool down, and the shading rate of the shading net can be selected according to your needs. The advantage of shading net is that it can not only prevent sunburn vegetables, but also allow part of the light to illuminate the interior of the greenhouse, ensuring the photosynthesis of vegetable leaves; you can also take spray cooling methods.
[company profile] Beijing Ruiyan Automobile Decoration Co., Ltd. is a joint stock joint venture company jointly invested by China and South Korea, which mainly provides services for Beijing Hyundai Automobile Co., Ltd. and in its production of finished cars to supply 4 categories, 15 items, 48 kinds of high-quality products. The registered capital is 10.2 million US dollars, mainly in the development and manufacture of automobile moulds, fixtures, door guards, inner roofs, dashboards, seats, package plates, sunshades, carpets, rear box panels, column decoration panels, interior lamps and other automobile accessories, and sell self-produced products and provide technical services for self-produced products.