A.1:1000 B.1:2000 C.1:3000 D.1:4000 E.1:5000
A.1:300 B.1:500 C.1:800 D.1:1000 E.1:1500
A.煤層 B.砂巖 C.粘土巖 D.礫巖 E.泥巖