单词	穿孔素
释义	穿孔素医perforin；porforin
随便看	friction compensatian friction compensating friction compensation friction-compensation friction component friction composite friction composite material friction composition friction compound friction condition friction cone friction-cone friction cone clutch friction cone drive friction conefficient friction conglomerate friction constant friction contact friction contact element friction contact load friction contact model friction-contact model friction control friction-controlled gyroscope friction-controlled steering mechanism