permanent bar永外磁棒permanentadj.永久的；持久的n.<口> 烫发permanent magnetic actuator controller永磁机构控制器permanent- magnet brushless DC motor永磁无刷直流电动机permanent magnet syn-chronous motors永磁同步电机Permanent address and telephone number家庭地址和电话permanently inflation-proof in value永久保值permanent- magnet synchronous motors永磁同步电机permanent magnetic operating mechanism永磁操动机构permanent-magnet synchronous machine永磁同步电机permanent magnetism brushless DC motor永磁无刷直流电机Permanent-magnet linear servo system永磁直线同步电机