permanent bar永外磁棒
permanentadj.永久的;持久的n.<口> 烫发
permanent possibility of sensation感觉恒久的可能性
permanent-magnet field generator永磁发电机
permanent magnet synchronous motors永磁同步电机
permanent-field synchronous motor[电] 欠场同步电动机
permanent magnet DC brushless motor永磁直流无刷电动机
permanent cell stimulating activity永存细胞刺激活性
permanent telecommunication service常设电信业务
permanent magnet brushless DC motor永磁无刷直流电动机