| |||
| 相位脉冲调制 | |||
|
phase- pulse modulation : 32 phrases in 9 subjects |
| Air defense | 4 |
| Automobiles | 2 |
| Earth sciences | 1 |
| Electronics | 14 |
| Geophysics | 3 |
| Information technology | 1 |
| Radio | 1 |
| Space | 3 |
| Technology | 3 |
| |||
| 相位脉冲调制 | |||
|
phase- pulse modulation : 32 phrases in 9 subjects |
| Air defense | 4 |
| Automobiles | 2 |
| Earth sciences | 1 |
| Electronics | 14 |
| Geophysics | 3 |
| Information technology | 1 |
| Radio | 1 |
| Space | 3 |
| Technology | 3 |