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Digital Signal : 119 phrases in 17 subjects |
| Agriculture | 1 |
| Air defense | 3 |
| Automobiles | 4 |
| Aviation | 14 |
| Communications | 5 |
| Earth sciences | 2 |
| Electronics | 33 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Information technology | 14 |
| Multimedia | 4 |
| Project management | 1 |
| Rail transport | 2 |
| Scientific | 1 |
| Space | 6 |
| Technology | 7 |
| Telecommunications | 20 |