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 |