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被 DxfEntityContainer, DxfInsert, DxfPoint, DxfLine, DxfDimension, DxfDimAligned, DxfDimAngular, DxfDimDiametric, DxfDimLinear, DxfDimRadial, DxfLeader, DxfCircle, DxfArc, DxfEllipse, DxfPolyline, DxfSpline, DxfText, DxfMText, DxfSolid , 以及 Dxf3DFace 重载.