 |
| 正极: 133 phrases in 16 subjects |
| Antennas and waveguides | 1 |
| Automobiles | 1 |
| Aviation | 2 |
| Bridge construction | 1 |
| Chemistry | 3 |
| Electric machinery | 1 |
| Electrical engineering | 1 |
| Electricity | 2 |
| Electrochemistry | 1 |
| Electronics | 29 |
| General | 43 |
| Mathematics | 8 |
| Oil and gas | 2 |
| Physics | 3 |
| Radio | 2 |
| Technology | 33 |