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转速调节是泵装置改变工作点常用的方法之一。随着用水需求或运行条件的变化，通过改变转速，可以提供所需要的流量和扬程，使泵在高效区运行。
Speed regulation is one of the commonly used methods for changing the operating point of a pump device. As the water demand or operating conditions change, by changing the speed, you can provide the required flow and lift, the pump in the high-efficiency zone operation.