permanent dye持久染料,不变色染料
permanentadj.永久的;持久的n.<口> 烫发
permanent-magnet calculation永磁体计算
permanent magnet virtual image永磁体镜像
permanent filmforming material固有成膜物质
permanent persiting elongation持久伸长; 余留伸长
permanent magnet stepper motor永久磁铁步进电动机
permanent magnet biased bearing永磁偏置
permanent split capacitor motor固定分相的单相电容式电动机
Permanent synchronous generator永磁同步发电机