siltstones

粉砂岩
常用释义
粉砂岩

扩展信息

粉沙岩
钻井机械（2）_~~阳光o2-无处不在~~_百度空间 ... clays 土层 siltstones 粉沙岩 aquifer 含水层 ...

例句

The graptolites are generally preserved as films in mudstones or muddy siltstones at the depths of thousands meters beneath the surface.

这些笔石标本一般保存成薄膜状于数千米之下的泥岩或泥质粉砂岩之中。