We found that the ?N/Z? value in neck region is clearly large at the early stage of neck formation in neutron?rich nuclei reactions, which cause the lowering of dynamical Coulomb barrier and thus enhance the fusion cross section.是什么意思_We found that the ?N/Z? value in neck region is clearly large at the early stage of neck formation in neutron?rich nuclei reactions, which cause the lowering of dynamical Coulomb barrier and thus enhance the fusion cross section.在线翻译_英语_读音_用法_例句