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超低频率; 特低频 | |||
超低频率 | |||
超低频 (300 ~300 赫兹) | |||
超低频 (ULF); 超低频 | |||
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超低频〔率〕 | |||
超低频 | |||
特低频; 超低频率 | |||
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超低频的 | |||
超低频 | |||
English thesaurus | |||
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ULF (less than 3 Hz) | |||
ULF |
ultra- low -frequency : 10 phrases in 4 subjects |
Air defense | 2 |
Electronics | 3 |
Explosives and Explosive Ordnance Disposal | 1 |
Technology | 4 |