名词短语
中文翻译：回流弯管
同义词：
['backflow bend', 'back-outlet bend']
例句：
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1.The engineer designed a back outlet return bend to improve the efficiency of the pump.
工程师设计了一个回流弯管来提高泵的效率。
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2.The construction crew installed a back outlet return bend to control the flow of water during construction.
施工队伍安装了回流弯管来控制施工期间水流。
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3. The back outlet return bend was crucial in preventing water from flowing backwards into the main pipeline.
回流弯管在防止水反向流入主管道中至关重要。