magnetic key磁动电键magneticadj.有磁性的；有吸引力的；催眠术的n.磁体，磁性物质magnetic card storage磁性卡片存储器magnetic perturbation磁扰magnetic tape storage磁带存储器,磁心存储,磁带存储magnetic balance type磁平衡式magnetic refrigerator磁致冷机magnetic strip system磁条系统magnetic polarization磁极化,内禀磁感应强度magnetic ink printing磁性油墨印刷magnetic memory plate磁存储板magnetic sector field扇形磁场