名词
中文翻译：回流阀
同义词：
['backflow valve', 'backwash valve例句：1. The back wash valve is used to prevent the flow of wastewater from the system.（回流阀用于防止废水从系统中流出。）2. The back wash valve was designed to ensure efficient water usage.（回流阀被设计来确保高效的用水。）']
例句：
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1. The back wash valve is used to prevent the flow of wastewater from the system.
回流阀用于防止废水从系统中流出。
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2. The back wash valve was designed to ensure efficient water usage.
回流阀被设计来确保高效的用水。
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3.The back wash valve is essential for maintaining the cleanliness of the water supply.
回流阀对于保持供水的清洁至关重要。