external ann外臂externaladj.外来的；外部的；外面的；表面的n.外观；外部；外界事物externally fired retort外热釜external oblique muscle外斜肌(动)external decimal number外部十进制数external acouate fibers外弓状纤维external relation model外部关系模型external pipe prestress体外管内预应力external disequilibrium外部失衡external strategic risk外部性战略风险external defibrillation体外除颤External Access Network外部接入网络