回收 利用 : 44 phrases in 19 subjects |
Animal husbandry | 1 |
Automobiles | 2 |
Business | 3 |
Chemistry | 1 |
China | 1 |
Earth sciences | 1 |
Ecology | 2 |
Economy | 3 |
Electronics | 1 |
Environment | 2 |
Exhibitions | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 1 |
International trade | 1 |
Management | 1 |
Metallurgy | 10 |
Oil / petroleum | 1 |
Plastics | 2 |
Technology | 9 |