The size of a sediment particle alone is usually not sufficient to describe it. 单颗泥沙的粒径通常不足以描述其性质。
With the augmentation of grain size, surface defects of the manganese zinc ferrite nanocrystallines minish, and intergranular free volume combines. 随着粒径的增大，纳米晶的表面缺陷减小，晶界间的自由体积发生复合。
These pearls are uniform in size. 这些珍珠的颗粒大小很整齐。
The average microchip is about the size of a grain of rice. 一般的微型芯片像大米颗粒大小。
