⑩天掌 Teaching Plan on Advanced Mathematics o (2)椭球面: 2 2 x y Z Jy b 2 2 2 x ty.z 旋转椭球面 tianjin polytechnic dmivendityTianjin Polytechnic University Teaching Plan on Advanced Mathematics o z y x (2)椭球面： 1 2 2 2 2 2 2 + + = c z b y a x 1 2 2 2 2 2 + = + c z a x y 1 2 2 2 2 + = c z a x 旋转椭球面