外部指导序列[如见于RNA酶P的反应]

external cardiopulmonary resuscitation

internal-external upset tubing【油气】

external angle to cove skirting

external cephalic version under tocolysis

external selection memory【计】;external selection storage【计】;word select memory【计】

external convertibility【金融】

retching of blood or spontaneous external bleeding during menstruation

internal and external verification【审计】