名词中文翻译
中文翻译：下曲柄箱
同义词：
['lower cylinder', 'lower cylinder case', 'lower cylinder head']
例句：
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1. The car's engine is located in the lower crankcase.
汽车的发动机位于下曲柄箱。
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2. The mechanic replaced the lower crankcase after the engine overheated.
在引擎过热后，机械师更换了下曲柄箱。
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3. The lower crankcase is where the piston moves up and down to turn the engine.
下曲柄箱是活塞上下移动以转动引擎的地方。