名词
中文翻译：返回阀
同义词：
['reflux valve', 'return valve', 'reflux control valve']
例句：
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1. The engineerinstalled a return valve to prevent the system from overheating.
工程师安装了回流阀以防止系统过热。
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2. The return valve is responsible for regulating the flow of gases back into the system.
回流阀负责将气体重新送回系统中，以调节流量。
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3. The return valve was designed to ensure that the pressure in the pipeline remains stable.
回流阀的设计旨在确保管道中的压力保持稳定。