millstone grit

基本解释磨石粗砂岩

网络释义

1)millstone grit,磨石粗砂岩2)quartzitic grit,石英岩质粗砂岩3)quartzose laterite,石英质粗砂岩4)feldspathic grit,长石質粗砂岩5)meuliere,磨石;硅化灰岩或砂岩6)holystone,软砂岩;浮石;磨石;用磨石磨