The power input shaft of the main speed reducer is provided with an optoelectronic pulser;
在主减速器动力输入轴上设装光电脉冲器；
The cause of cracks after brush-plating on the main speed reducer of helicopter was analyzed and the ameliorative measures by shot-peening were brought forward consolidation.
分析了直升机主减速器齿轮电刷镀修复后产生裂纹的成因，通过试验提出了喷丸强化改进措施。
The speed reducer upper on the main machine makes central axis rotate through shaft coupling and roller hanger rotates with central axis and rollers on the hanger roll around the inside of ring.
安装在主机顶部的减速机，通过联轴器连接中心轴旋转，中心轴带动磨辊吊架旋转，磨辊装在吊架上沿磨环内周一起滚动。
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