impeller key
... 叶轮密封环：impeller sealing ring 叶轮键：impeller key 叶轮法：vane method ...
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叶轮的关键 IMPELLER KEY
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叶轮结构由特殊材料制作的一空心圆柱体，安装在主轴总成上端轴头上，用圆锥套和键联接传递钮距，高速旋转。
The structure of impeller made by special material a hollow cylinder and installed in spindle assembly with cone at the top of the head, axial and key connection from, high-speed transfer button.
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