The anti-freeze of the pharmacy, before the advent of the low-temperature cold wave, spray the surface of the crop with the general manager of the tree, and also lay the surface of the sunshade net, hay, etc., to keep warm and prevent freezing, and reduce the freezing damage caused by the cold wave. Fill the anti-freezing water. Before the frost comes, fill the field with water and increase the humidity of the air near the ground to keep the heat from dissipating and increase the air temperature. The anti-freeze of the smoked smoke, the frost comes, burns the weeds, the fallen leaves or the non-toxic chemicals of the smoke, so that the ground is covered with a layer of smoke screen to prevent the heat loss on the ground and achieve the heat preservation effect. Fertilize and freeze, before the frost comes, use fertilization to add ground temperature. Applying manure, compost and grass ash in the field can not only increase the ground temperature, but also increase soil fertility. Silicon Nitride ceramic materials can be used for high-temperature engineering components, advanced refractory materials in the metallurgical industry, corrosion-resistant parts and sealing parts in the chemical industry, and cutting tools and cutting tools in the machining industry. Silicon Nitride Ceramic Tube,Silicon Nitride Ceramic Nozzle,Silicon Nitride Ceramic Round-Plate,Silicon Nitride Ceramic Guide Wheel SHENZHEN HARD PRECISION CERAMIC CO.,LTD , https://www.hardcm.com
Since silicon nitride can form a strong bond with silicon carbide, aluminum oxide, germanium dioxide, boron nitride, etc., it can be used as a bonding material and modified with different ratios. The relative molecular mass is 140.28. Gray, white or off-white. It is a high temperature insoluble compound, has no melting point, and has high resistance to high temperature creep. The binder-free reaction sintered silicon nitride has a softening point of 1800 ° C or higher; hexagonal system. The crystal is a hexahedron.
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