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群频率 | |||
群频率; 频率组合 | |||
基团频率; 群频 (率) |
group frequency : 31 phrases in 12 subjects |
Air defense | 4 |
Artificial intelligence | 1 |
Biotechnology | 1 |
Communications | 3 |
Electronics | 3 |
Information technology | 3 |
Oil / petroleum | 1 |
Space | 2 |
Sports | 2 |
Technology | 8 |
Telecommunications | 2 |
United States | 1 |