无损检测仪器 电磁轭磁粉探伤仪技术条件
Non-destructive testing instruments-Specification of electricity magnetic yoke magnetic particle flaw detectior
2012-05-24
TB/T 2047.1-2011
铁路用无损检测材料技术条件 第1部分:磁粉检测用材料
Technical specification for materials used for non-destructive testing in railway.Part 1:Materials for magnetic particle testing