... 消能池（消力池）stiling basin 消能戽（消力戽）roller bucket 防渗铺盖apron；impervious blanket ...
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... 消力池 stilling pool 消力戽 roller bucket 消能工 energy dissipater ...
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slotted roller bucket 槽齿式戽
bucket line guide roller 斗链滚筒
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Geometry model of roller bit's sphere tooth, wedgy tooth and bucket shape tooth were established;
建立了牙轮钻头的球形齿、楔形齿和勺形齿三维空间的几何模型；
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