英语语法分析

The basic principle for the geometrical design of hypoid gears is introduced.

介绍了准双曲面齿轮几何设计的基本原理。

The method of ultrasonic vibration lapping on the spiral-bevels and hypoid gears was first presented.

提出螺旋锥齿轮超声振动复合研磨的方法，介绍了其原理；

Thus, the basis of founding loaded tooth contact analysis calculating method of hypoid gear is brought about.

其结论是建立该类齿轮副承载啮合性能分析计算方法的基础。