名词
中文翻译：排油阀
同义词：
['discharge valve', 'exhaustvalve']
例句：
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1. The engineerneeds to disconnect the discharge cockbefore starting the engine.
工程师在启动发动机之前需要断开排气阀。
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2. Theold car had a worn-out discharge cock thatneeded to be replaced.
这辆旧车有一个磨损的排气阀，需要更换。
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3. The technician carefully checked the dischargecock to ensure it was functioning properly.
技术人员仔细检查了排气阀，确保其正常工作。