“水磨”造句

水磨掉[侵蚀]了岩石.
The water has rasped away the rocks.

加工工艺上也有说法, 要用 “ 水磨粉 ”.
There are also claims processing technology, use the " water mill. "

澄清,淘选通过''.'水磨'. ''把精细的颗粒从粗糙的颗粒中分离出来.
To separate fine particles from coarse by grinding in water.