- of operational gis
- 操作: operate; manipulate; handle
- 地理: geographical features of a p ...
- 信息系统: information system
- 地理信息系统: dead reckoning; geographic information systems; geographical information systems; geographicalinformatio ystem（gis）; geographicinformatio ystem; georgraphical information system (gis); gis geographic information system; gis，geographical information system; mgis; system gis
- 城市地理信息系统: ugis; urban geographic information system
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