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signal system : 56 phrases in 14 subjects |
Automobiles | 2 |
Communications | 24 |
Electronics | 1 |
General | 8 |
Health care | 1 |
Information technology | 1 |
Mechanic engineering | 2 |
Medical appliances | 1 |
Microelectronics | 2 |
Mining | 4 |
Optics branch of physics | 1 |
Technology | 1 |
Telecommunications | 1 |
Transport | 7 |