sliding friction coefficients
sliding friction coefficients
滑动摩擦系数
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The deduction is confirmed by establishing self locking conditions and determining the sliding friction coefficients between sand and chromium plating layer and between sand and nitrided surface.
通过建立砂粒自锁条件及实测长石砂岩、石英砂岩与泵筒镀铬层或氮化层的滑动摩擦系数值， 证实了对柱塞拉伤失效原因的推测是正确的。
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