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ArcEngine CreateFeatureClass IUnknownCoordinateSystem 建立要素類 UnknownCoordinateSystem ISpatialReference IFeatureClass
04-12
![【AO筆記】關于建立IFeatureClass中的參考系設定——不能為null也不能為IUnknownCoodinateSystem[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)