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.
汽车离合器位于发动机和变速箱之间的飞轮壳内，用螺钉将离合器总成固定在飞轮的后平面上，离合器的输出轴就是变速箱的输入轴。
Automobile clutch in the engine and gearbox between the flywheel shell, with screw will be fixed in the clutch assembly after the plane of the flywheel, clutch gearbox output shaft is the input shaft.
同时又要保证汽车在不平路面行驶、突然加减速、转弯等工况下，发动机始终保持在设计位置，使整个动力总成不因发动机与车架之间的相对运动过大而受损。
In order to prevent the powerplant from damaging, the mount should keep the engine at the design location in the condition of car driving on uneven road, speeding up and down suddenly and swerving.
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