external Q外Q值externaladj.外来的；外部的；外面的；表面的n.外观；外部；外界事物external broach外拉刀external system外部系统external ground外接地external memory外部存储器external strain外应变external market境外市场external rectus外直肌external design外部设计external lender境外货款人external threat外部威胁