To optimize the design of pump-turbine runner, we should understand the flow characteristics of the pump turbine, including the runner.
要优化水泵水轮机转轮设计，应了解包括转轮在内的水泵水轮机全流道的流动特性。
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The result reveals the interior flow complexity of the pump-turbine runner, and the relations and influence of different parts, which leads to an improved runner design.