airborne: 123 phrases in 16 subjects |
Acoustics | 1 |
Agriculture | 1 |
Chemistry | 1 |
Coal | 1 |
Communications | 19 |
Earth sciences | 4 |
Environment | 20 |
General | 16 |
Industry | 2 |
Law | 1 |
Life sciences | 3 |
Measuring instruments | 2 |
Medical | 10 |
Natural sciences | 3 |
Technology | 4 |
Transport | 35 |