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