射线 谱 : 91 phrases in 15 subjects |
Astronautics | 1 |
Chemistry | 3 |
Electronics | 12 |
General | 30 |
Geology | 4 |
Medical | 1 |
Military | 1 |
Nanotechnology | 1 |
Nuclear and fusion power | 1 |
Oil / petroleum | 1 |
Oil and gas | 1 |
Oil processing plants | 2 |
Physics | 4 |
Technology | 28 |
Thermal engineering | 1 |