对外的external
外标法external standard method
体外心肺复苏术external cardiopulmonary resuscitation
外真热TRUE external heat
内外加厚油管internal-external upset tubing【油气】
外部指导序列[如见于RNA酶P的反应]external guide sequence
外耳道闭锁atresia of external acoustic meatus
外因论theory of external cause