permanentadj.永久的;持久的n.<口> 烫发
permanent glow恒定辉光
permanent loop长期环路
permanent cure根治
permanent flow恒流,定常流
permanent work永久性工程
permanent gage永久性水尺
permanent tone不挂机音
permanent link永久链路
permanent call不息呼叫
permanent axis恒轴线