To prepare for the various measures taken by the enemy air strike.
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fáng kōng
Air defense
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No. 3
Air defense warning
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No. 4
Air defense missile
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No. 5
Guard against air strikes. Liu Qing "iron wall" the first chapter: "the relationship between them because the air defense, moved east from the city in a 15 Omura went." Sha Ting "air defense": "It is also oil and vinegar to a journalist, the The importance of air defense on the boast made a speech. "
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防空警报
No. 7
Guilin: at 11 o'clock on the November 30, in memory of the Japanese air raid victims in Guilin.
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百科辞典
air defence
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English Expression
n.: air defense, antiaircraft, anti-aircraft defense