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並前往https://www.hyd.gov.hk/en/technical_references/technical_document/GIS_Specifications/GIS_Specifications_of_HyD_version_2_track_change.pdf

GIS Specifications for Engineering Surveys of ...

格式化: 預設段落字型, 中文(台灣). 刪除: 52 ... This manhole cover feature includes all drainage manhole covers on Highways Polygon.

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