1) major diameter
螺纹大径
2) pitch
[英][pɪtʃ] [美][pɪtʃ]
螺纹中径
1.
A simple qualification criterion of regular pitch diameter;
一种普通螺纹中径合格性的简单判定方法
2.
This paper describes the priciple and method of measuring the pitch diameter of a large diameter sawtooth thread with a single ball,and introduces in detail the measuring device to realize the method.
本文论述了用单球法测量大直径锯齿形螺纹中径的原理与方法，具体介绍了为实现这种方法而设计的检测装置。
3) thread root diameter
螺纹内径
补充资料：中径
1.犹直径。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条