在工具管柱或冲洗管装配或拆卸时固定于其上的机械装置。

A mechanical device attached to tool strings or flush surface tubulars as they are assembled or disassembled.

youdao

在工具管柱或冲洗管装配或拆卸时固定于其上的机械装置。

A mechanical device attached to tool strings or flush surface tubulars as they are assembled or disassembled.

youdao