Ellyn.艾莉elln.L形之物；厢房；直角弯；厄尔（英国长度单位）elliptic function椭圆函数Ellinger's method外语写作教学elliptic equation椭圆方程,椭圆型微分方程elliptic meridian椭圆经线ellipsoidal norma椭球体法线elliptic catenary椭圆悬链线elliptic cylinder椭圆柱面,椭圆柱ellipsoid fitting椭球拟合ellipsoidal bound椭球界ellipsoidal model椭球模型