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air-to-ground radio frequency

英 [eə(r) tu ɡraʊnd ˈreɪdiəʊ ˈfriːkwənsi] 美 [er tu ɡraʊnd ˈreɪdioʊ ˈfriːkwənsi]

【电】空对地无线电频率

电力

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