troughs : 175 phrases in 25 subjects |
Agriculture | 40 |
Antennas and waveguides | 1 |
Astronomy | 1 |
Chemistry | 2 |
Coal | 3 |
Construction | 10 |
Earth sciences | 11 |
Economy | 2 |
Electricity generation | 1 |
Electronics | 5 |
Energy industry | 8 |
Environment | 2 |
Fish farming pisciculture | 3 |
General | 5 |
Industry | 13 |
Life sciences | 14 |
Materials science | 4 |
Mechanic engineering | 11 |
Medical | 4 |
Metallurgy | 27 |
Natural sciences | 1 |
Packaging | 1 |
Statistics | 1 |
Textile industry | 1 |
Transport | 4 |