名词
中文翻译：头架
同义词：
['headstock', 'gearbox']
例句：
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1.The engineer installed the new headstock on the machine.
工程师在机器上安装了新的头架。
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2. The old gearbox was worn out and needed to be replaced.
旧的齿轮箱磨损严重，需要更换。
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3. The car's headstock is designed for easy access to the engine compartment.
汽车的头架设计便于进入发动机舱。