coal measures

常用短語

overlying strata of coal measures煤系蓋層；含煤巖系蓋層

coal measures plant煤系植物

paralic coal measures近海型含煤巖系

Gas of coal measures煤系氣

coal measures unit煤系旋回；煤系單位

coal-measures unit煤系單位

genetic criteria of coal measures含煤巖系成因標志

lower coal measures下石炭系；下部煤系

Anyuan coal measures安源煤系