H-bombs of fifteen megatons each.
每

力
15兆

弹。
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In 1947 he became head of the Institute for Advanced Study and served from 1947 until 1952 as chairman of the General Advisory Committee of the Atomic Energy Commission, which in October 1949 opposed development of the hydrogen bomb.
1947年,他成为高级研究所的负责人,并于1947年至1952年担任美国原
能委员会的总顾问委员会主席,该委员会在1949年10月反对发展氢
。
It hosts annual sediments showing clear spikes due to the colossal impact of humanity on the planet from 1950 onwards, from plutonium from hydrogen bomb tests to the particles from fossil fuel burning that have showered the globe.
由于1950年以来人类对地球的巨大影响,从氢
试验产生的钚到化石燃料燃烧产生的颗粒,它每年的沉积物都显示出明显的峰值。
多