1、Meshing spur gears must have the same diametral pitch.
互相嚙合的直齒圓柱齒輪，必須具有相同的徑節(jié)。

2、The main principles of choosing a suitable diametral clearance are presented in the paper.
最后文中還給出了軸承徑向游隙選用的一般原則。

3、The main principles of choosing a suitable diametral clearance are presented in...
最后文中還給出了軸承徑向游隙選用的一般原則。

4、This paper introduces a rarely seen method of describing with diametral distance.
本文介紹了一種鮮為人知的用直徑距離描繪橢圓的方法。

diametral翻譯