环境 因 素 : 53 phrases in 19 subjects |
Agriculture | 4 |
Animal husbandry | 2 |
Business | 2 |
Chemistry | 1 |
Commerce | 1 |
Earth sciences | 4 |
Ecology | 6 |
Engineering geology | 1 |
Environment | 1 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 1 |
Horticulture | 1 |
Marketing | 1 |
Nautical | 1 |
Oil / petroleum | 1 |
Space | 3 |
Technology | 14 |
United Nations | 5 |
Water resources | 2 |