feathering-vane runner的意思|示意

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feathering-vane跑步

转桨式转轮 ... feathering Francis runner 斜流式转轮，斜翼式法兰西斯转轮 feathering-vane runner 转桨式转轮,斜翼式转轮 high speed runner 高速转轮 ...