名词
中文翻译：活塞油环
同义词：
['piston ring', 'oil ring', 'piston seal']
例句：
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1.The piston oil ring is crucial for preventing engine wear.
活塞油环对于防止发动机磨损至关重要。
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2.Engineers need to regularly inspect the piston oil ring to ensure proper functioning.
工程师需要定期检查活塞油环，以确保其正常工作。
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3. The piston oil ring was replaced due to its failure after several months of use.
由于使用了几个月后活塞油环失效，因此进行了更换。