下图为汤姆生在1897年测量阴极射线的荷质比时所用实验装置的示意图k为阴极a1和a2为连接在一起的中心空透的阳极电子从阴极�出后被电场 Template




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tomski下图为汤姆生在1897年测量阴极射线的荷质比时所用实验装置的示意图k为阴极a1和a2为连接在一起的中心空透的阳极电子从阴极�出后被电场 coloring