Home / Standards / GB/T 40794-2021 GB/T 40794-2021 Active Measurement method of irreversible magnetic flux loss due to high temperature of rare earth permanent magnet 稀土永磁材料高温磁通不可逆损失检测方法 Standard Type GBT ICS 77.120.99 CCS H14 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 国家标准委 Drafting Unit N/A