A simple, easy to use, correct and reliable for measurement of single pitch diameter of inner thread is provided.

提供了一种简便易行、准确可靠的测量内螺纹单一中径的手段。

youdao

A simple, easy to use, correct and reliable for measurement of single pitch diameter of inner thread is provided.

提供了一种简便易行、准确可靠的测量内螺纹单一中径的手段。

youdao