接头上有接头杠杆，在拉索的拉动下能够压动顶杆，打开阀芯。

A joint lever is arranged on the joint, and can press the push rod when pulled by a guy cable to open the valve core.

youdao

接头上有接头杠杆，在拉索的拉动下能够压动顶杆，打开阀芯。

A joint lever is arranged on the joint, and can press the push rod when pulled by a guy cable to open the valve core.

youdao