silica sand

• 石英砂

silica sand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. Selective laser sintering of foundry silica sands was investigated by experiments.
   对铸造硅砂的选择性激光烧结进行了试验研究。