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。
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