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单词 θ79683
释义
the world > matter > physics > atomic nucleus > nuclear fission > nuclear fuel > [noun] > source of thermal neutrons > distance travelled by neutron (1)
mean free path1879

the mean value of a free path; esp. the mean value of the distance travelled by a particle before collision with another particle or with a…

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更新时间:2024/12/23 14:48:52