The engine is completely new design of water-cooled chain machine, box and cover use compact structure, easy to install cross-country motorcycle.

全新设计的水冷链传动发动机，箱体和盖类采用紧凑结构方式，便于越野摩托车安装。

youdao

Technique issues such as clamping deformation, guarantee of hole position accuracy and plane seal, etc. for motorcycle case body and case cover are introduced.

介绍了摩托车箱体、盖加工中的装夹变形、位置精度和平面密封保证等方面的工艺问题。

youdao

In this paper, the acoustic simulation was applied to improve the noise performance of gearbox cover on the motorcycle of 125-C with the low vibro-acoustic structure design.

本文应用声学仿真的方法对125-C型摩托车变速箱端盖进行结构优化设计，达到降低表面辐射噪声的目的。

youdao