size composition

• 颗粒组成

size composition的用法和样例：

例句

1. By the innumerable tiny lignin granulometric composition lignin dust may say is blocks the sky.
   由无数细小木质颗粒组成的木质粉尘可以说是遮天蔽日。
2. The sieving method is the essential method for determination of grain size distribution of macrogrits.
   摘要磨料粗磨粒粒度组成检测的基本方法为筛分法。