... wear 磨损 worn bushing 磨损导套,磨损的导套... worn coin 残币,减重硬币...
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worn bushing
穿衬套
以上为机器翻译结果，长、整句建议使用 人工翻译 。
By the experiment research on road running test of timing bushing chains for automotive engine, its wear mechanism and the worn surface of pins and bushings were analyzed.
通过道路试验研究，分析了汽车正时套筒链的磨损机制及销轴和套筒的磨损表面形貌。
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