名词
中文翻译：曲柄框架
同义词：
['crankshaft', 'crankcase', 'crankpin']
例句：
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1. The car's engine is acrankshaft that powers the wheels.
这辆车的引擎是一个曲柄连杆机构，它驱动车轮。
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2. The crankshaft is responsible for transmittingpower from the engine to the transmission.
曲柄连杆机构负责将发动机的动力传递给变速器。
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3. The crankshaft ismade of high-quality steel and hasa smooth surface for easy operation.
曲柄连杆机构由高质量的钢材制成，表面光滑便于操作。