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泵产生汽蚀时，应把流量调小或降速运行；
Pump cavitation, the flow should be run down or slow down;
youdao
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为此，开展了定速泵调速节能研究。
Thereby an investigation is made on the energy saving of the pump by speed control.
youdao
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为此，开展了定速泵调速节能研究。
Thereby an investigation is made on the energy saving of the pump by speed control.
youdao