external fin外肋externaladj.外来的；外部的；外面的；表面的n.外观；外部；外界事物external bracket of pump油泵外用支架external social eappital外在社会资本external acoustic meatus外听道external standard source外标准源external ankyloblepharon外眦睑缘粘连external interrupt level外部中断级external bicipital ridge肱二头肌外侧嵴external radial boundary外部径向边界external priority number外部优先权号external negative effect外部负效应