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pulse frequency: 41 phrases in 13 subjects |
Astronomy | 1 |
Communications | 10 |
Computers | 1 |
Earth sciences | 1 |
Electronics | 7 |
Information technology | 2 |
Medical appliances | 2 |
Nuclear physics | 1 |
Power electronics | 1 |
Remote sensing | 1 |
Technology | 4 |
Telecommunications | 2 |
Радиоактивное излучение | 8 |