自屏 meaning in English

extinction

The bisonc burnup library is replaced to facilitate the computation of the burnup process with complicated burnup chains . we have made and evaluated the new library ( hendl ) which contains 139 kinds of nuclides with 175 groups for neutron and 42 groups for gamma , 15 kinds of neutron reactions and p0 - p5 expansion . the revised code which we call bus - id is more adaptable to the computation of hybrid reactor for its fuel breeding and the transmutation of the hlw
并且在一维输运及燃耗计算程序bisonc的基础上，提出用新的数据库( hendl )代替原有的bisonc数据库， hendl库考虑了更加全面的燃耗过程和多种燃料循环方式，通过修正读入的核截面数据库中的参数，考虑共振自屏效应，制作并且评估了新的含有139种核素、多种反应截面、 175群中子42群光子、 p _ 0 - p _ 5展开的中子反应数据库，开发出新的程序bus - 1d ，使得更能适应聚变?裂变混合堆的燃料增殖、高放长寿命核废料( hlw )的嬗变等计算的要求。