Video surveillance system lightning protection design

Lightning strike disasters have random and regional characteristics. Lightning protection engineering is to minimize the loss of lightning disasters. However, the risk of lightning strikes is inevitable and can only be reduced as much as possible. With the rapid development of communication t.......

Gear pump housing hole how to process

Gear pump housing requires two holes for high precision machining. In the medium and small batch production, the general use of general-purpose machine tools and special tooling to processing, this processing method is difficult to achieve accuracy requirements.

Gear pump from the .......