名词
中文翻译：曲柄金属
同义词：
['crank shaft', 'crankshaft', 'crankpin']
例句：
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1.The car's engine is made of crank metal.
这辆车的引擎是用曲柄金属制成的。
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2. The crankshaft is responsible for turning the wheels.
曲轴负责转动轮子。
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3.The crankpins are used to connect the piston to the cylinder.
曲柄销用于将活塞连接到气缸。