1945年7月16日,美国在本土新墨西哥州阿拉莫多戈沙漠的三一试验场进行了一场名为“三位一体”的核试验,爆炸了一颗名为“瘦子”的核装置,这是世界上第一颗成功试爆的原子弹,成为世界上第一个掌握核武器的国家。
原子弹,是利用铀235或钚239等重原子核裂变反应,瞬时释放出巨大能量的核武器,亦称裂变弹。原子弹是作为核武器之一,利用核反应的光热辐射、冲击波和感生放射性造成杀伤和破坏作用,以及造成大面积放射性污染,阻止对方军事行动以达到战略目的的大杀伤力武器。
举个例子:1.Unlike what some of us might imagine, the bombs didn't completely disintegrate everything without a trace.
新中国成立初,在中国共产党的坚强领导下,经过全国人民自力更生、艰苦奋斗,我们很快有了中国历史上的无数个第一:生产出第一架飞机、第一辆汽车、第一台拖拉机,自行研制第一颗原子弹、氢弹先后爆炸成功,自行研制第一颗人造地球卫星发射成功。
August 1 each year is the anniversary of the People's Liberation Army, also called the “August 1” Army Day. Its origin can be traced to 2:00 a.m. on August 1st, 1927 at the front line Committee headed by Zhou Enlai and He Long, Ye Ting, Zhu De, Liu and other leaders of the 20,000 person Northern Expeditionary Force. Nanchang in Jiangxi province was held in an armed uprising and started an armed struggle between the Communist Party of China and Kuomintang reactionaries.由陆、海、空三军人员共同组成,象征着国家或军队的最高礼仪。