非磁性－磁性转变
Nonmagnetism-magnetism transition
频道活性比较器
channel activity comparator
通道放射性比较器
channel activity comparator
易车不锈钢及易车钢之不同尺寸及硬度比较
Hardness of Different Types & Size of Free Cutting Steel
表面光洁度比较器
surface finish comparator
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
传输线磁性器件
transmission line magnetic device