4.2.6 Head Cover
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4.2.6 Head Cover圖片（共1張） :

        This is a cylindrical box-like structure provided on the top surface of the runner, asshown in Fig.4.7.Fig.4.7 Head cover of a Francis turbineIts functions are ① to prevent any water leaking through the gap between the guidevanes and the runner from findi......（本文共 747 字, 1 張圖）     [閱讀本文] >>