Running conditions of parallel-connected variable and constant speed pump are discussed using pump performance curve, and the correct switch steps are pointed out.
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。
Taking the pump station of West-South Oil Product pipeline as an example, dynamic programming theory is adopted to settle pump running problem of the whole pipeline with speed variable pumps.
以西南成品油管道泵站为例，运用动态规划的原理，解决配有调速泵的管道全线开泵方案问题。
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