摘要
In recent years, the measurements of cosmic-ray nuclei and electrons with higher accuracy have made it possible to study further the cosmic-ray propagation models. According to the current theories about cosmic-ray origin, the energy spectra of nuclei and electrons are assumed to have the same shapes, i.e. q（E）=AE<sub>0</sub><sup>-γ</sup>, here A is a constant, E is the energy and γ<sub>0</sub> is the spectral index of source. However, the fittings to the data of nuclei and electrons in the single leaky box model give γ<sub>0p</sub>=2.0 for nuclei and γ<sub>0e</sub>=2.7 for electrons, respectively, which do not agree with the theories of cosmic-ray origin.
