permanentset永久形变permanentadj.永久的；持久的n.<口> 烫发permanent bulkhead固定隔板permanent-magnet永久磁铁permanent alliance永久同盟permanent loop lamp不挂机监视灯permanent ship lock永久性船闸permanent retention永久保持permanent dentition恒齿系,二次出牙,恒牙列permanent migration永久性迁移permanent cell line永久细胞系[保持不断分裂能力的细胞系]permanent electrode非自耗电极