| Subject | English | Chinese |
| telecom. | multi-frequency code | 多频编码 |
| telecom. | multi-frequency code sender and receiver | 多频码发送器和收码器 |
| telecom. | multi-frequency code signaling | MFC 信令 (MFC signaling) |
| telecom. | multi-frequency code signaling | 多频编码信令 (MFC signaling) |
| space | multi-frequency code signalling | 多频编码信号方式 |