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