但是到了六十年代末，洲际导弹已经成了核弹头的主流运载工具。大家都认识到超高速截击机(和超音速轰炸机)已经没有意义。
But by the '60s the ICBM had become routinized as the delivery vehicle for nuclear warheads and everyone realized that super-fast interceptors (and supersonic bombers) were kind of pointless.
这条1300公里长的高速铁路线预计将两个城市之间旅行时间裁减到约五个小时，每天有90对子弹头列车运行。
The 1300-kilometer-long high-speed rail line is expected to cut travel time between the two cities to about five hours, with 90 pairs of bullet trains operating each day.
结论：破片和冲击波是大威力弹头爆炸时的主要致伤因素，且高速破片有加重冲击伤的作用。
Conclusion: the shell fragments and blast waves are the main wounding factors during the explosion of powerful bombs and high speed shell fragments increase the wounding effects of blast waves.
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