radio call sign 中文意思是什麼
radio call sign
解釋
無線電號-
The radio call sign for aircraft used to transport the president of the united states. any aircraft used to carry the president is referred to as air force one
無線電呼叫代碼,專指美國總統專機。任何載有美國總統的飛機都叫空軍一號。
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