Due to the refinement of the social division of labor and the enhancement of international .......

Centrifugal pump classification 1. Dynamic pump Dynamic pump is through the high-speed rotatin.......

Roots pump is a vacuum equipment. Roots pump is a type of vacuum pump without internal compres.......

For example, the coordinates of the 3' point, the coordinates of 2 points (40, 85), and.......

The rapeseed skillfully yields high quality and high yield, and the early application of s.......

With the deepening of the research and development of special ceramic materials, the proportion.......

First, the choice of base

The selected organic tea base must meet the ecological .......

Gradient cemented carbide substrate coating

In order to improve .......

[Positioning]: The system can automatically set the center and ±4, ±Y four end faces .......

Figure 2 Effect of HSS tool coating on deformed debris thick.......