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| 波形图: 40 phrases in 16 subjects |
| Air defense | 1 |
| Automobiles | 4 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 4 |
| General | 5 |
| Geophysics | 3 |
| Metallurgy | 1 |
| Nuclear and fusion power | 1 |
| Physics | 1 |
| Radio | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 13 |
| Telecommunications | 1 |
| Video recording | 1 |
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