中文摘要：

随着EGS在辐射物理和医学物理等众多方面的广泛应用，其物理内核被EGS开发小组不断更新，电子的输运模型也越来越完善。文章综述了电子输运模型的进展，包括韧致辐射光子的角度抽样、阻止本领数据的更新以及电子的多重散射算法等等。

英文摘要：

With the wide application of EGS in radiation physics and medical physics, the inner physics model is perfected by the research group of EGS. A review of the recent improvements of electron physics model is presented, including the bremsstrahlung angular sampling, updates of the stopping power data and the new multiple scattering algorithms etc.