An air burst is an explosion in which a weapon is detonated in air at an altitude below 30 km but at sufficient height that the fireball does not contact the surface of the earth.

空中爆炸指的是核爆发生在海拔30公里以下，且火球有足够高度不接触到地面。

The altitude of an air burst can be varied to obtain maximum blast effects, maximum thermal effects, desired radiation effects, or a balanced combination of these effects.

爆炸高度可以进行调整，以达到最大的冲击波效果、热辐射效果、放射效果，或实现三者的平衡搭配。

Initial nuclear radiation will be a significant hazard with smaller weapons, but the fallout hazard can be ignored as there is essentially no local fallout from an air burst.

相比小型武器，早期核辐射的危害是很严重的。但是放射性尘降的危害可被忽略，因为空中爆炸基本上不会给地面带来尘降。