非磁性－磁性转变
Nonmagnetism-magnetism transition
非线性磁特性
nonlinear magnetization characteristics
单极（PN极）特性测试结构
Test constucture of single-polar characterise
半硬磁特性
semi-hard magnetic mharacteristic
变磁极性直流发电机
variable magnet polarity DC generator
超导性磁性材料
superconducting magnetic material
超顺磁性磁共振造影剂
superparamagnetic contrast agent for abdomen MRI
磁极性地层划分
magnetic polarity stratigraphic classification