Since when do not know from time to increase the speed, moving further and further time to become fast, faster even youth can not pull the tailall.
也不知道从什么时候起时间加了速，日子变得愈走愈快，快的连青春的尾巴都拽不住了。
2
In this paper, the transmission shaft of the all-moving horizontal tail for a fighter plane is considered as a structural system, and its failure probability is analysed.