quartz sands

• 石英砂

quartz sands的用法和样例：

例句

1. Sludge reduction performance by earthworm biofilters using quartz sand and ceramsite as media was compared.
   比较了石英砂和陶粒滤料蚯蚓生物滤池的污泥减量化效果。
2. It is necessary to conduct separation analysis prior to beneficiation of quartz sand.
   可选性分析是石英砂选矿前需要进行的必要手段。