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air defense ['eədɪ'fens]
技术	defensa aérea; defensa por el método de la alerta en vuelo
英语 词库
air defense ['eədɪ'fens]
军队, 后勤	Set of measures designed to suppress or limit an enemy air action. (FRA); All actions conducted by specialized units in order to guarantee the freedom of action of the land forces against the enemy's air actions. For the army, these specialized units include the AD artillery and army aviation formations. (FRA)
美国	Defensive measures designed to destroy attacking enemy aircraft or missiles in the atmosphere, or to nullify or reduce the effectiveness of such attack (JP 3-01) 亦见 active air defense, aerospace defense, passive air defense

air defense: 18 短语, 5 学科

一般	3
军队	1
技术	11
联合国	2
运输	1