air supply : 51 phrases in 19 subjects |
Coal | 1 |
Construction | 4 |
Earth sciences | 4 |
Energy industry | 5 |
Health care | 4 |
Measuring instruments | 1 |
Mechanic engineering | 1 |
Medical appliances | 2 |
Metallurgy | 1 |
Mineral products | 2 |
Municipal planning | 1 |
Natural resourses and wildlife conservation | 3 |
Natural sciences | 1 |
Nuclear physics | 4 |
Politics | 1 |
Sports | 1 |
Technology | 4 |
Transport | 7 |
Ventilation | 4 |