区: H region; H等强讯号区: equisignal zone讯号: a-n signal; code of signals; leftsignal; signal人类讯息处理: human information processing编号区: numbering area; numbering zone标号区: label area符号区: sign field信号区: signal area; signaling zone正号区: plus range双信号区 等强信号区: bi-signalzone编号区代码: numbering area code; numbering plan area code编号区域: numbering area标号区段: labelled field拨号区域: dialing area等信号区: equisignal sector; equisignal zone, sector; split符号区别: code type符号区距名: symbolic offset name国内编号区: national numbering plan area机场信号区: signal area零信号区: null area; zero signal zone世界编号区: world numbering zone双信号区: bisignal zone无信号区: hole; zero signal zone信号区域: signal area置信号区域: confidence region
