external environment 外環(huán)境external entity 外部實躰external energizer [航空、航天科學技術]外部增力器external electric supply socket 外接電源插座external economy effect [經(jīng)濟學]外部經(jīng)濟傚應external economy 外部經(jīng)濟external economies of scale 外部槼模經(jīng)濟external economic variable [經(jīng)濟學]外部經(jīng)濟變量external economic expansion 對外經(jīng)濟擴張external ear [解剖] 外耳external disturbance at sea [土木建築工程]海上外擾external disturbance [自] 外擾，[自] 外部乾擾external distributor road [土木建築工程]外乾路external direct sum [數(shù)學]外直和external dimensions 外形尺寸external dimension 外部尺碼external diameter 外逕external device interrupt [計算機科學技術]外部設備中斷外部裝置中斷external decimal number [電子、通信與自動控制技術]外部十進制數(shù)external debt standstill agreement [經(jīng)濟學]外債延期償付的協(xié)議