夹套球阀应能在本技术规格书规定的所有现场条件下正常运行。

Jacket ball valves shall be able to work norm ally under all field conditions specified in the technical specifications.

youdao

夹套球阀应能在本技术规格书规定的所有现场条件下正常运行。

Jacket ball valves shall be able to work norm ally under all field conditions specified in the technical specifications.

youdao