different grain diameter

• 不同粒径

different grain diameter的用法和样例：

例句

1. The extraction of indigo naturalis powder with different diameters was studied.
   研究提取不同粒径青黛的溶出情况。
2. The experimental research on the apparent conductivity of pearlite in different particle sizes and different vacuity is reported.
   实验测定了不同粒径珠光砂在不同真空度下的表观导热系数。