The result indicates that with the increase of tip clearance size, the performance of fan stage changes obviously.
计算结果表明，随着动叶叶顶间隙的增加，风扇性能变化显著。
If the drive shaft wear mild, just press the old bush changed after standard size bushing, fit clearance can be restored to allow range.
若主动轴磨损轻微，只需压出旧衬套后换上标准尺寸的衬套，配合间隙便可恢复到允许范围。
The clearance of the sifter bottom can be adjusted according to size of the materials.
筛底可根据物料细度要求调整间隙，是硬质原料理想的粉碎设备。
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