separated aggregate

• 分级骨料

separated aggregate的用法和样例：

例句

1. Use a riddle to sort the aggregate before use.
   使用骨料之前，要用粗筛对骨料进行分类。
2. The composite aggregate is composed of LWA and normal aggregate.
   复合骨料系混凝土中的普通骨料被轻骨料取代而成。