treatment plant : 90 phrases in 15 subjects |
Agriculture | 1 |
Alternative dispute resolution | 1 |
Chemistry | 4 |
Coal | 2 |
Construction | 4 |
Economy | 1 |
Environment | 38 |
General | 14 |
Industry | 1 |
Life sciences | 1 |
Metallurgy | 2 |
Natural resourses and wildlife conservation | 17 |
Natural sciences | 1 |
Technology | 2 |
Water supply | 1 |