magnetic hum磁哼声magneticadj.有磁性的；有吸引力的；催眠术的n.磁体，磁性物质magnetic power factor磁功率因数magnetic tape traller磁带尾部magnetic-vane meter磁铁翼式仪表magnetic disk adapter磁盘适配器magnetic field screen磁场筛选机magnetic oscillograph电磁示波器magnetic sound talkie磁录式有声电影magnetic damping loss磁阻尼损耗magnetic leakage flux漏磁通magnetic currentmeter磁力流速计