名词
中文翻译：上蒸汽缸
同义词：
['upper cylinder', 'upper piston', 'upper cylinder head bolt']
例句：
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1.The engineer carefully assembled the upper cylinder of the engine.
工程师小心翼翼地组装了发动机的上气缸。
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2. The upper cylinder was damaged during the accident.
事故中，上气缸受损。
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3. The upper cylinder is crucial for the proper functioning of the engine.
上气缸对于发动机的正确运作至关重要。