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| 位脉冲 | |||
| 数字脉冲 | |||
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Digital Pulse : 37 phrases in 13 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Aviation | 3 |
| Communications | 1 |
| Computer networks | 1 |
| Earth sciences | 1 |
| Electronics | 9 |
| Geophysics | 1 |
| Information technology | 2 |
| Metallurgy | 1 |
| Space | 7 |
| Technology | 7 |
| Telecommunications | 2 |