1、防空
... air-cushioned adj. 气垫的 airdefence n. 防空 airdent [`eE9dent] n. 气喷磨牙机 ...
airdefence effectiveness防空效能
airdefence efficiency防空效能
gun airdefence高炮防空
computer airdefence system计算机防空系统
front area airdefence前沿地区防空
ground-to-airdefence地对空掩护
building of people's airdefence人防建设