短语词组短语bare bus -bar [电]裸母线;裸汇流排Bus -bar fault 母线故障generator bus -bar 发电机母线bus -bar span 母线跨距tour bus -bar 母线triple bus -bar 三联汇流条;三母线positive bus -bar [电]正母线;正汇流排busbar system 母线系统；汇流排 返回 bus-bar