... impeller wear ring 叶轮口环 impeller seel ring 叶轮密封环 First stage impeller retaining ring 第一级叶轮挡圈 ...
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通过改变叶轮口环间隙的大小对不同叶片型式的低比转速离心泵进行试验，证明口环间隙对低比转速离心泵效率的影响与泵叶轮的叶片的型式无关。
The experiments on different types of impeller are done by changing the clearance of wear-ring to prove that the clearance has no influence on the pump efficiency under various types of impeller.
叶轮转动一周，会在转到某一角度时，局部出现口环径向间隙的最大间隙或最小间隙。
Rotating impeller week, will go to a certain point of view, the local emergence of Sandy Bay's largest radial clearance or minimum clearance space.
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