| |||
understudy | |||
field research | |||
on-farm research | |||
area familiarization; field study | |||
| |||
field research |
实地 研究 : 19 phrases in 9 subjects |
Aviation | 2 |
Earth sciences | 8 |
Electronics | 1 |
Explosives and Explosive Ordnance Disposal | 2 |
Geology | 1 |
Geophysics | 1 |
Oil / petroleum | 1 |
Space | 2 |
Technology | 1 |