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.
利用特性曲线对变速泵与定速泵并联运行工况进行了讨论，指出其正确切换步骤。
Running conditions of parallel-connected variable and constant speed pump are discussed using pump performance curve, and the correct switch steps are pointed out.
在这样的系统中，应注意确保调速泵与定速泵都能在高效段运行，并实现系统最优。
In such a system, the governor should be taken to ensure that pump fixed speed of the pump can be efficient in operation, and achieve optimal system.
在这样的系统中，应注意确保调速泵与定速泵都能在高效段运行，并实现系统最优。
In such a system, the governor should be taken to ensure that pump fixed speed of the pump can be efficient in operation, and achieve optimal system.
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