 |
| 活性剂: 111 phrases in 19 subjects |
| Biology | 1 |
| Chemistry | 7 |
| Drilling | 5 |
| Electronics | 9 |
| Environment | 1 |
| Food service and catering | 2 |
| General | 23 |
| Geochemistry | 3 |
| Geology | 1 |
| Medical | 4 |
| Nanotechnology | 1 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 4 |
| Oil processing plants | 24 |
| Oilfields | 4 |
| Plastics | 1 |
| Polymers | 2 |
| Technology | 17 |