magnetic bow磁性熄弧magneticadj.有磁性的；有吸引力的；催眠术的n.磁体，磁性物质magnetic liquid磁性流体magnetic grader磁力分选机magnetic AC hum感应交流哼声magnetic switch磁开关magnetic filter磁性过滤器magnetic theory磁场理论magnetic eraser去磁器magnetic texure磁性结构magnetic pillar磁柱magnetic method磁选法