An easy tool for measuring the depth of sealing groove is devised.

介绍一种测量抽油杆减振器柱塞密封槽深度的测量工具。

youdao

An easy tool for measuring the depth of sealing groove is devised.

介绍一种测量抽油杆减振器柱塞密封槽深度的测量工具。

youdao