noun 下载 🔗分享 椭球，椭圆体。 A surface, all of whose cross sections are elliptic or circular (including the sphere), that generalises the ellipse and in Cartesian coordinates (x, y, z) is a quadric with equation x2/a2 + y2/b2 + z2/c2 = 0. Examples : "The planetarium showed models of various ellipsoids, demonstrating how planets and other celestial bodies are not perfect spheres. " 天文馆展示了各种各样的椭球体模型，以此来说明行星和其他天体并非都是完美的球体。 math physics space 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 椭球体, 椭圆体。 Such a surface used as a model of the shape of the earth. Examples : "Here the geoid is thirty meters below the ellipsoid." 在这里，大地水准面比作为地球形状模型的椭球体低三十米。 geography world geology math 与AI对话词汇游戏阅读练习
