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
