名词
中文翻译：三投式曲柄
同义词：
['three-throw crank', 'three-throw camshaft']
例句：
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1. The three-throw crank is a crucial component of the engine's operation.
三投式曲柄是发动机运行的关键部件。
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2. The three-throw crank was designed to simplify the assembly process.
三投式曲柄的设计目的是为了简化装配过程。
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3. The three-throw crank has been shown to improve fuel efficiency by reducing vibration during operation.
研究表明，三投式曲柄通过减少运行中的振动可以提高燃油效率。