名词短语
中文翻译：上游喷口
同义词：
['upstream diffuser', 'upstream nozzle']
例句：
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1.The engineer designed the upstream nozzle to improve water flow efficiency.
工程师设计了上游喷嘴以提高水流效率。
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2. The upstream nozzle is responsible for controlling the flow of water before it reaches the downstream section.
上游喷嘴负责控制水流在到达下游部分之前的流量。
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3. The upstream nozzle was designed to minimize pressure drop and maximize flow rate.
上游喷嘴被设计成最小化压力损失和最大化流量。