Abstract: The causes and hazards of the transformer's biasing in the full-bridge inverter arc welding power source are analyzed. The principle and method of preventing the biasing in the primary side of the transformer or setting the automatic correcting circuit are des…
Experience
Third, the tool management is backward:
As an important auxiliary tool for participating in manufacturing activities, the tool system plays an important role in the flexibility and productivity of CNC machine tools and the precision and correctness of product manuf…
China's copper processing innovation is very active. It plays an important role in maintaining a stable development of the copper and butadiene industry in a complex and ever-changing external environment. The characteristics of China's copper processing innovation are: focusing on…
Rapid commercialization of genetically modified organisms
Yu Sangli
Huang Daxuan, a researcher at the Institute of Biotechnology of the Chinese Academy of Agricultural Sciences who has been researching transgenic technology for many years, is pleased that the gates of the …
One, toilet
1. Whether it is made of gold or porcelain, it is not a gold bar, even if it is constipation. The hardness is no b…