Explosion-proof floor scales can cause explosions when oxygen (air), explosive substances, and detonating sources (such as electric sparks, hot surfaces) are present in the environment. The explosion-proof sca.......
(1) Grasp the characteristics and characteristics of various types of suckers. The buds of buds are buds that are drawn before the winter, and are named after cold winter drought, the old leaves are cold and dry, and the buds are covered with a layer of dry and dry leaves. They also have l.......
(1) Grasp the characteristics and characteristics of various types of suckers. The buds of buds are buds that are drawn before the winter, and are named after cold winter drought, the old leaves are cold and dry, and the buds are covered with a layer of dry and dry leaves. They also have l.......
Citrus fruit cracking reasons: First, the differences between varieties, in the same orchard, different varieties of fruit cracking situation is different, uneven thickness of the skin, especially the thin top of the fruit species the most vulnerable to cracking fruit (such as shatang Tang.......
The British Ministry of Foreign Affa.......
Misunderstanding 1, sparse planting. Sparse plantation is done for the cotton farmers, but the individual planting of bells limits the yield of cotton.æ¤ Investigate that most farmers now have between 30-40 bolls. It is very difficult to ring 50 or more bells. The theoretical data is o.......