 |
| |||
| improductif | |||
| ingrat | |||
| stérile (о породе); inexploitable (IceMine) | |||
| stérile | |||
| improductif (о пласте); sec (о каменном угле) | |||
| непродуктивный: 32 phrases in 9 subjects |
| Construction | 1 |
| Forestry | 2 |
| General | 1 |
| Geology | 14 |
| International Monetary Fund | 2 |
| Medical | 1 |
| Mining | 1 |
| Oil and gas technology | 9 |
| Technology | 1 |