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。

youdao

This paper introduces a technique for the elimination of clearance between the explosive charge and the bottom of shell, besides a testing method adopted for the process is given.

介绍消除弹丸药柱与弹底间隙的工艺方法及工艺过程中使用的间隙测试方法；

youdao

There ought to be at least a nickel's width of clearance between the whirring blades and the bottom or sides of the blender jar.

WSJ: How to Ace a Google Interview

But Keane settled the match in injury time, striding onto Cerny's long clearance to drive under Gordon and send the crowd into raptures and keep Sunderland in the bottom three.

BBC: Tottenham 2-0 Sunderland