Mechanical method is to use wire brush or wrapped with wire cloth in the tube of the tube, and drag scale get rid.

机械方法是用铁丝刷或用铁丝裹上布条在管内来回拖动，把管内的水垢消除掉。

youdao

Brush seals can remain seal clearances unchanged after rotor's moment large scale radial moving.

刷式密封在转子瞬间大幅径向位移后可保持密封间隙不变。

youdao

For large scale inscriptions, the outline of the letter is traced and then filled in with a brush.

大型题词，先描轮廓，然后再用笔刷填满。

youdao