bottom discharge : 54 phrases in 18 subjects |
Biotechnology | 1 |
Chemistry | 1 |
Construction | 8 |
Drilling | 1 |
Ecology | 1 |
Energy industry | 2 |
Geology | 1 |
Hydroelectric power stations | 1 |
Makarov | 1 |
Military | 1 |
Mining | 7 |
Nautical | 4 |
Oil / petroleum | 11 |
Packaging | 2 |
Rail transport | 1 |
Road works | 3 |
Technology | 6 |
Thermal engineering | 2 |