| |||
voice band | |||
audiorange | |||
| |||
audiofrequency range |
音频带 : 27 phrases in 13 subjects |
Agriculture | 1 |
Aviation | 2 |
Earth sciences | 2 |
Electric machinery | 1 |
Electronics | 8 |
Engineering geology | 1 |
General | 1 |
Information technology | 2 |
Multimedia | 1 |
Project management | 1 |
Radio | 2 |
Technology | 1 |
Telecommunications | 4 |