名词
中文翻译：曲柄箱部分同义词
同义词：
['crankcase', 'crankcase section']
例句：
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1. The engine's crankcase section is where the pistons move up and down.
发动机的曲柄箱部分是活塞上下移动的地方。
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2. The crankcase section was designed to protect the engine from damage.
曲柄箱部分的设计是为了保护发动机免受损坏。
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3. The crankcase section of the car is made of metal and has a lot of moving parts.
汽车的曲柄箱部分由金属制成，有许多活动部件。