Ellyn.艾莉elln.L形之物；厢房；直角弯；厄尔（英国长度单位）elliptic pendulum椭圆摆ellipsodal cavity椭球聚光器ellipsoidal earthn.椭球形地球Elliot scotometer埃利奥特[描绘]暗点计elliptic surfaces椭圆曲面ellipsometer test椭圆偏振仪ellipsoidal joint椭圆关节ellipsoid obovoid椭圆状倒卵形的elliptic trochoid椭圆摆线elliptic geometry椭圆几何