7 年前
视频简介
该片讲述的是为了寻找关在派出所的爸爸,9岁的姐姐和7岁的弟弟从4号线常绿树站走到3号线弘济站,对他们来说就像世界一周旅行一样的远路,比丛林的法则更艰难的冒险。。核试验科教记录片。是自人类发明原子弹、氢弹以来的各种核爆炸记录,采访了许多美国参与核试验的专家,非常珍贵的第一手资料。著名的“小男孩”(广岛)和“胖男人”(长崎)就在这里,不可不看! On July 16, 1945, at a site called Trinity, a plutonium bomb was assembled and brought to the top of a tower. The bomb was detonated, producing an intense flash and a fireball that expanded to 600 meters in two seconds. The explosive power was equivalent to 18.6 kilotons of TNT. It grew ...。
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农村