[China Aluminum Industry Network] With the rapid development of the aluminum processing industry, higher requirements have been put on the quality of aluminum processing products. The traditional manual and mechanical stirring methods can no longer meet the needs of aluminum processing and .......
On December 3, 2002, China's bid to host the 2010 Shanghai World Expo was a success, which made Shanghai's urban construction enter a critical period. The challenging large-scale project of .......
In July, when the Yellow River entered the main flood season, the Yellow River Tangnaihai Hydrological Station (Longyangxia Storage Station) opened the main flood season with a maximum flood peak of 2,960 cubic meters per second. In order to properly contro.......
The three-piece ball valve works as follows:
First, open the process
1. In the closed position, the ball is pressed by the valve stem and pressed against the valve seat.
2. When the handwheel is turned counterclockwise, the valve ste.......
Since June 21, precipitation in the south of Hunan's Hunan Province has been generally more or more, and there is less in northern Hunan; most of the sunshine is less. In the middle of this period, in the area of ​​central Hunan, heavy rains were observed, and some farmlan.......