drill operator
相关英语词汇推荐
- ciminite
- permanent hardness
- medium thickness seam
- buried anomaly
- groundwater discharge
- dasymetric representation
- composite aerial photographs
- corundophilite
- littoral shelf
- alvite
- broggerite
- anomaly in alluvium
- cipolino
- in situ theory
- well development
- catpleite
- monothermite
- anticlinorium,composite anticline,compound anticline
- senaite
- churchite