您要查找的是不是：
- C-P煤系C-P coal measures
- 系system
- 煤coal
- 煤系coal series
- 煤系岩相coal-measure facies
- 煤系盖层overlying strata of coal measures
- 煤系气coal measure gas
- 煤系土coal measure soil
- 非煤系non-coal-series
- 煤系单位coal-measures unit
- 煤系地层coal measure strata
- 煤系旋回coal measures unit
- 隐伏煤系buried coal series
- 煤系源岩coal-source rocks
- 煤系泥岩coaly mudstone
- 石炭煤系Coal Measures
- 测水煤系measuring water coal system
- 煤系岩石Coal measures rocks
- 湖沼煤系limnic coal deposits
- 近海煤系paralic coal deposits
