From the automotive market survey, it has been found that automatic transmission models are becoming more and more popular, and the frequency of maintenance of automatic transmissions is also increasing. It is also found that most owners are not clear how to properly .......
Defects in the work piece are generated when the workpiece is hot-pressed and welded to the cutting edge. This is due to the chemical affinity, high pressure and high temperature in the cutting zone. In the process of processing, the chips are separated due to the .......
Recently, Xugong Foundation won the 2017 annual national coal machinery industry outstanding enterprise. Xu Qinghua, general manager of Xugong Foundation and party secretary Kong Qinghua won the honorary title of National Coal Machi.......
The identification of the age of ancient trees has a very important role in the study of biology and history. The research on this aspect should be based on relevant data on tree trunk analysis, combined with the growth environment, growth potential, appearance, and bark of the a.......