 |
| 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 |