1)sandstone,沙岩2)Late Pleistocene,罗沙岩3)concrete and rock,混凝土与沙岩4)purple sandy rock,风化紫色沙岩
用法和例句
According to geological data of Xinjiang (the thickness of underground mudstone and sandstone was 12 m ), revolving mill grooving machine (continuous wall method) was adopted.
