magnetic oil磁性油magneticadj.有磁性的；有吸引力的；催眠术的n.磁体，磁性物质magnetic objects under water水下磁性体magnetic ampilfier regulator磁性放大调节器magnetic field strengthening磁场强化magnetic taep file operation磁带文件操作magnetic card filing cabinet磁卡片文件箱magnetically insulated diode磁绝缘二极管magnetic porous microspheres磁性多孔微球magnetic polarity time scale磁极性时间表magnetic tape-loop storage磁带环存储器Magnetic separation workshop磁选厂