piston and rod assembly
... 驱动小齿轮组Piston 活塞连杆总成Piston displacement 排气量Piston head ...
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曲轴连杆活塞总成 Crankshaft connecting rod piston assembly
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采用直读光谱仪、显微硬度机、光学显微镜和扫描电子显微镜等分析手段，对失效的汽车发动机活塞连杆总成断裂原因进行了分析。
Aemission spectrometer, micro-hardometer, optical microscope and scanning electron microscope were used to analyze the reason of crack on connecting rod unit assembly for piston of car engine.
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