Using of pre-drawing, extruding holes and shot peening techniques has shown obvious effect in extending the fatigue life of motorcycle chain.
用预拉、挤孔、喷丸等强化工艺来提高摩托车链条的疲劳寿命效果很明显；
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。
A new kind of detection method based on machine vision to measure geometry size and roundness error of external chain board of motorcycle roller chain is put forward.
针对摩托车用滚子链外链板的几何尺寸及圆度误差提出了一种基于机器视觉的检测方法。
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