Bedroom lighting selection Raiders

The bedroom is mainly a place for sleep and rest, sometimes restricted by living conditions, and used for work or friends and relatives. Bedroom lighting is mainly composed of general lighting and partial.......

Overview and application of electric drive axle prospects

Automobile exhaust pollution has become a major source of air pollution. The development of new energy vehicles has become a common aspiration of mankind: zero pollution, renewable energy, material recycling, and intelligent transportation. With the clearing of national policy guidance and the .......

The GM experiment should not be a farce

On the morning of the 7th, under the leadership of academicians of the Chinese Academy of Engineering and director of the National Maize Improvement Engineering Center Dai Jingrui, more than 20 active users signed up to the corn test site of China Agricultural University to pick genetical.......

Spraying foliar fertilizer eight attention

It varies with vegetables (1) leafy vegetables. For example, cabbage, spinach, and leek need more nitrogen. Spray fertilizer should be mainly urea and ammonium sulfate. The concentration of urea should be 1~2%, ammonium sulfate is 1.5%, and sprayed 2~4 times per season. Spraying in the earl.......

The selection, use, maintenance and storage of gas masks

The correct choice, use, maintenance and storage of gas masks are the key to fully demonstrating their protective functions and reliability. If an intact mask is used, due to improper selection, use and maintenance, its anti-virus performance will be reduced, and even .......

Foam sandwich panel knowledge

The foam sandwich panel is made of colored steel plate as the surface layer, closed-cell self-extinguishing polystyrene as the core material, and the color steel plate is pressed by an automatic continuous molding machine and then bonded with polyurethane (A, B) adhesive. a.......