名词
中文翻译：比例阀
同义词：
['proportioning valve', 'proportional control valve']
例句：
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1. The proportion valve is used to regulate the flow of fluids in a system.
比例阀用于调节系统中流体的流动。
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2. In this particular application, the proportion valve is crucial for maintaining consistent pressure levels.
在这个特定的应用中，比例阀对于保持压力水平一致至关重要。
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3. The engineer had to replace the old proportion valve with a more efficient model to improve efficiency.
工程师不得不用更高效的模型替换旧的比例阀以提高效率。