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深度穿 透 : 45 phrases in 15 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Archery | 1 |
| Aviation | 2 |
| Drilling | 1 |
| Earth sciences | 2 |
| Electronics | 1 |
| Geophysics | 1 |
| Metallurgy | 12 |
| Oil / petroleum | 9 |
| Refrigeration | 1 |
| Space | 2 |
| Superconductivity | 4 |
| Technology | 6 |
| Thermal Energy | 1 |
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