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bidirezionale | |||
modalità duplex | |||
duplex | |||
doppio viso | |||
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duplex | |||
duplice; doppio |
duplex : 50 phrases in 12 subjects |
Communications | 21 |
Earth sciences | 1 |
Electronics | 4 |
Industry | 1 |
Information technology | 2 |
Materials science | 5 |
Mechanic engineering | 2 |
Medical | 1 |
Metallurgy | 4 |
Statistics | 1 |
Technology | 2 |
Telegraphy | 6 |