| |||
| 脉冲调幅 | |||
| 振幅脉冲调制 | |||
| |||
| 振幅脉冲调制 | |||
|
amplitude- pulse modulation : 48 phrases in 12 subjects |
| Air defense | 2 |
| Automobiles | 2 |
| Earth sciences | 4 |
| Electronics | 15 |
| Geophysics | 5 |
| Information technology | 3 |
| Military | 1 |
| Oil / petroleum | 1 |
| Radio | 1 |
| Space | 3 |
| Technology | 8 |
| Telecommunications | 3 |