名词中文翻译1
中文翻译：Unknown
同义词：
['upper half cylinder', 'upper half cylinder block', 'upper half cylinder head']
例句：
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1. The engine is designed to fit perfectly into the upper half crank case.
发动机设计得可以完美地安装在上半部分曲轴箱。
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2. The mechanics of the car are intricate and require careful assembly in the upper half crank case.
汽车的机械结构复杂，需要仔细组装在上半部分曲轴箱。
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3. The upper half crank case is where the piston moves up and down to turn the engine.
上半部分曲轴箱是活塞上下移动来转动发动机的地方。