The data on side clearance and open working clearance from the first to the fourth ring were provided.
提供了第一到第四道环的侧面间隙和工作开口间隙数据。
For needle roller bearings without inner ring, a suitable internal clearance is achieved by selecting the appropriate tolerance for the raceway diameter.
对于无内圈滚针轴承，通过为滚道直径选择合适的公差，可得到合适的内部游隙。
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.
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。
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