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 flux densityn.磁通密度；磁感应强度magnetic stirring bar磁性搅拌棒magnetic head scanner磁头扫描器magnetic blowout fuse磁吹式熔断器magnetic metal powder磁性金属粉末magnetic card control磁卡控制器magnetic field forces磁场力magnetic deferrizater磁除铁器magnetic annihilation磁合并magnetic transmission磁力传动