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| 脉冲间隔周期 | |||
| 脉冲间隔; 脉间 | |||
| 脉冲周期 | |||
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pulse interval : 31 phrases in 9 subjects |
| Air defense | 5 |
| Aviation | 1 |
| Earth sciences | 1 |
| Electronics | 5 |
| Information technology | 1 |
| Oil / petroleum | 3 |
| Space | 6 |
| Technology | 8 |
| Telecommunications | 1 |
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