| |||
telephone emission | |||
telephone signal | |||
phone signal (oleg.vigodsky) |
телефонный сигнал : 98 phrases in 10 subjects |
Communications | 1 |
Electronics | 5 |
Information security and data protection | 3 |
Makarov | 1 |
Mass media | 66 |
Metrology | 1 |
Military | 1 |
Security systems | 3 |
Technology | 6 |
Telecommunications | 11 |