英语语法分析

The step-load testing of the ZPL—350 trochoidal-gear reducer shows that the fatigue rupture of the trochoidal gears takes place in the teeth of wheels.

通过对ZPL—350变长线齿轮减速器逐级加载试验表明：疲劳折断发生在大齿轮上。

This paper challenges some views such as the flank profile curvilinear equation of the trochoidal gear, presented in the paper "Performance Analysis of Trochoidal Gear Transmission".

本文对“变长线齿轮传动的特性分析”一文中所提出的变长线齿轮的齿廓曲线方程式等提出异议。

The experimental results showed that high quality of cavity surface can be obtained by using appropriate technologic parameter and trochoidal milling mode with micro-end mill cutter.

试验结果表明：采用小直径刀具，合适的工艺参数，次摆线分层走刀方式能加工出高质量的型腔表面。