Now, let us look at the white minerals in the granite. They are white to colorless, greasy luster with irregulargrain shape.
现在，我们来看一看这一块花岗岩石中的白色矿物，这些矿物形态不规则，白色到无色，具油脂光泽。
2
The zinc powders are classified as ordinary, fine and ultra-fine according to the grain diameter and spherical, lamellar and irregular according to the grain shape.
锌粉按粒径大小可分为普通锌粉、细锌粉和超细锌粉，按形状可分为球状锌粉、片状锌粉和不规则形状锌粉。
3
It is diffiuclt for brown rice grain to make standard sample because of its small size and irregular shape, and so its elastic modulus is hardly determined by conventional methods.