multifrequency code
| signaling
| multifrequency code | |
| geophys. | 多频码 |
| signaling | |
| bridge. | 作出信号 |
| busin. | 信号; 信号装置 |
| IMF. | 发出信号 |
| IT од. | 信令 |
| tech. | 信号传输; 直流振铃 |
| |||
| 多频码 | |||
| 多频编码信令; 多频编码 | |||
|
multifrequency code : 9 phrases in 4 subjects |
| Electronics | 3 |
| Space | 1 |
| Technology | 2 |
| Telecommunications | 3 |