counter air

• 夺取和保持空中优势,(进攻性或防御性)防空作战

counter air的用法和样例：

例句

1. Modern air defense faces the complex electromagnetic circumstance.Anti-TBM defense is difficult much more.
   现代防空作战面临复杂的电磁环境，使防御方进行战术弹道导弹防御时面临更大的困难。
2. It is a beneficial attempt in the research of fire distribution in air defense operation, and it also offer a referrence to both the decision-making and the theoretic research.
   这是对解决防空作战火力分配问题的一种有益的尝试与探索，同时也对防空作战指挥决策和理论研究以及指挥自动化系统建设提供了参考。