2016新课标三维人教A版数学选修2-12.2椭圆
INCLUDEPICTURE "2-2.tif" \* MERGEFORMAT eq \a\vs4\al(椭 圆)2.2.1 椭圆及其标准方程 INCLUDEPICTURE "以本为本教参.TIF"
2016新课标三维人教A版数学选修2-12.2椭圆