| |||
sound duct | |||
tone channel |
音道 : 104 phrases in 16 subjects |
Air defense | 1 |
Automobiles | 2 |
Aviation | 2 |
Communications | 3 |
Electronics | 36 |
Fishery fishing industry | 2 |
General | 3 |
Information technology | 13 |
Multimedia | 3 |
Otorhinolaryngology | 1 |
Project management | 2 |
Rail transport | 3 |
Shipbuilding | 1 |
Space | 10 |
Technology | 11 |
Telecommunications | 11 |