黑磁铁聚氨酯耐磨漆
black magnetic iron oxide polyurethane abrasion resistance paint
超导多极增频磁铁
superconducting multipole wiggler
电磁铁磁路结构
magnetic circuit structure of solenoid
环形磁铁磁场
Magnetic field of circular magnet
顺磁铁磁相变
paramagnetic-ferromagnetic transition
永磁铁磁导率
permeability of permanent magnet
半频聚束
half-frequency bunching method