自动体外除颤起搏器automated external defibrillator pacemaker
外标法external standard method
内外加厚油管internal-external upset tubing【油气】
外在需求external need
外部中断禁止位external interrrupt inhibit【计】
外耳道狭窄stricture of external auditory canal
外生殖器汗腺腺瘤syringoma of external genitalia
尿道外口external urethral meatus