名词
中文翻译：液压指数
同义词：
['hydraulic factor', 'hydraulic ratio']
例句：
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1.The hydraulic index of the pump is critical to its performance.
泵的液压指数对其性能至关重要。
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2. The engineer used a hydraulic index to optimize the system's efficiency.
工程师利用液压指数优化了系统的效率。
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3. The hydraulic index is calculated based on the pressure drop across the valve.
液压指数是根据阀门前后的压力差来计算的。