granule size

• 粒度大小

granule size的用法和样例：

例句

1. The original matter of the tonstein and its grain size are main reason for that the different textures of the tonstein are of different element contents in the same bed.
   夹矸的原始组分及粒度大小是造成同一夹矸层中不同夹矸类型间元素含量差异的主要原因。