Fales grain

• 闭砂

Fales grain的用法和样例：

例句

1. If we could actually see the path described by a particle,such as a sand grain in the rock.
   假如实际上，我们能看见由一个象岩石内部的砂粒这样的微粒绘出的轨迹。
2. See a floor first arenaceous smooth surface is slick, have without grain bosomy protruding, cork grain is pure.
   先看地板砂光表面是否光滑，有无鼓凸颗粒，软木颗粒是否纯净。