ground zero是什么意思

用法例句

The explosion center coordinate is computed through software by means of the explosion shock wave pressure and transmission time difference measured during the sea trial explosion test of undersea weapon.

在水中兵器实航爆炸试验中,借助软件测得的爆炸冲击波压力和传播时间差计算出爆炸爆心坐标。