permil千分率(‰)permn.电烫发v.电烫（头发）permeation of electron wave function电子波函数渗透Perma-bears will be left behind.长期熊市会过去。permeability of blood-brain barrier血脑屏障通透率permanet magnet synchronous generator永磁同步发电机permafrost environment characteristic多年冻土环境特征permafrost regions ground temperature冻土地温permeability coefficient of rock mass岩体渗透系数Permanganate Index Automatic Analyzer高猛酸盐指数在线监测仪Permo-carboniferous period coalfield石炭-二叠纪煤田permeability scale in fluid relaxation渗透率弛豫尺度