The S character of pump turbine was introduced and its formation cause was theoretically analyzed.

介绍了水泵水轮机“S”特性并从理论上分析了其形成的原因.

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The assembling, actuating , water - tight test of pump - turbine globe valve and its quality control are introduced.

介绍了抽水蓄能水轮机球阀装配 、 动作及密封漏水试验工艺性与质量控制.

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