geocratic periods
相关英语词汇推荐
- artificial radioactive element
- speciation
- organoclay
- layering of relief
- greenwich meridian
- limonite
- cuesta
- soil subtype
- temperature barrier
- precision processing
- ala twin
- ferganite
- old plate tectonics
- descloizite
- rock terrace
- discharge hydrograph
- acid geochemical barrier
- Suspended solids
- sial
- volcanic ejecta