size of grain

• 粒度

size of grain的用法和样例：

例句

1. Grain size of the sample had been measured.
   降尘量和粒度参数值在尘暴前期和后期都呈现不同特征。
2. There is a general decrease in grain size upward.
   粒度一般是向上递减的。
3. These pearls are uniform in size.
   这些珍珠的颗粒大小很整齐。
4. 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。