而且更加崩溃的是用英文,我们在atomic world(原子世界)的单元时要教photoelectric effect(光电效应),里面有用到一些公式是关于Planck constant(普朗克常数),例如E=hf,h就是Planck c...
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"The world will note that the first atomic bomb was dropped on Hiroshima,a military base.
VOA: special.2011.06.23
President Harry Truman announced to the world about the first bomb: "The world will note that the first atomic bomb was dropped on Hiroshima, a military base.
VOA: special.2009.06.14
Freeing the world of nuclear weapons has personal meaning for Yukia Amano, the Director-General of the International Atomic Energy Agency.
VOA: standard.2010.08.06
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