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