The code for the bombs like these to self-activate is usually eleven numerals, the first seven numerals wake the bombs up, ten there follow 20 seconds of testing and sending stand-by signals, that's when we can track down the location of bombs,
这种级别的核弹激活 通常需要11位的数字 前七个让他们从"苏醒"过来， 随后大概20秒钟进行自我检测 和发回信号准备实施爆炸