In winter, crops in greenhouses often suffer from chemical fertilizer burning, ammonia hazard and nitrous acid gas poisoning. Ammonia poisoning hazards are divided into two types: traumatic type and internal injury type. The traumatic hazard is mainly caused by damage to the leaves of the seed
Read moreThe 4th National CNC Skills Competition was held in Fushan City, Guangdong Province from December 19th to 26th, 2010. Seventy-one outstanding athletes from 31 provinces and cities participated in four projects. The competition of the seven groups. The players' good spirits, exquisite operation
Read moreExtruded polystyrene foam (referred to as XPS), insulation board 1. Multi-purpose machine can produce 5cm, 10cm, 15cm and other lightweight insulation composite panels, lightweight insulation composite corrugated board, building partition wall, large-format colored wave tiles of various sizes
Read moreMagnetic separator affects the main direction of the mineral processing industry The magnetic separator is used to remove iron powder from powder granules. The magnetic separator is widely used for resource recovery, wood, mining, kiln, chemical, food and other workshops. It is suitable for magne
Read morePart processing requirements The part is a screw with adjustable span width of the adjustable wrench. The material is round steel of 20, the flank has certain roughness requirements, the screw part of the cutting part needs chamfering, and the middle pin hole and the outer cylindrical surface mus
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Read moreAbstract Although the output value of China's machine tool industry has ranked first in the world and has shown rapid growth for ten consecutive years, the structural contradictions in the whole industry have become increasingly prominent. At the 6th executive director (expansion) meeting
Read moreWith the support of the National Natural Science Foundation of China, the Ministry of Science and Technology, and the Chinese Academy of Sciences, researchers from the Key Laboratory of Molecular Nanostructures and Nanotechnology Institute of the Institute of
Read moreThe photovoltaic industry has never been as concerned as it is today. After successively experiencing the trade barriers of the United States, the European Union, and India, restarting the domestic photovoltaic market has become the most realistic option, and a series of warm winter polici
Read moreAluminosilicate: It is produced by using hard clay clinker as raw material, melting or blowing into fiber by electric resistance or electric arc furnace. Characteristics: Low thermal conductivity Excellent thermal stability and chemical stability without binders and corrosive substances. Alu
Read more304 stainless steel pipe is widely used in agriculture, chemicals, building materials, boilers, marine parts, medical equipment, auto parts, and household products, because 304 stainless steel pipe has good corrosion resistance, heat resistance, non-magnetic, Impact resistance, weldability
Read moreLED (Light Emitting Diode), a solid-state semiconductor device that converts electricity directly into light. The heart of the LED energy-saving lamp is a semiconductor wafer. One end of the chip is attached to a bracket, one end is a negative pole, and the other end is connected to the positi
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