方钻杆补心 | |
dril. | kelly bushing; kelly bushings; kelly drive bushing; drill stem bushing; drive bushing; rotary bushing |
测量 | |
environ. | measuring |
hydroel.st. | measure; measuring |
tech. | measurement |
| |||
kelly bushing; kelly bushings; kelly drive bushing; drill stem bushing; drive bushing; rotary bushing |
方钻杆补心 : 17 phrases in 4 subjects |
Drilling | 9 |
Earth sciences | 1 |
Navigation | 2 |
Oil / petroleum | 5 |