外部 1.(某一范围以外) outside; external 外部世界 the external world; the outside world; the outer world; 事物的外部联系 external relations of things; 国家政策的制定不该受外部影响。 national policy should not be determined by outside influence.2.(表面) exterior; outside; surface 外部装修 exterior decoration; (房屋) 外部的修理 outside repairs
If both maus of a twisted - pair link contain internal crossover functions , an additional external crossover is necessary 如果双绞线链路的双mau包含内部转换线路的功能,额外的外部转换线路是必须的。