短語詞組短語spherical outside surface 外球面spherical l surface 球面spherical interior surface 球缺面spherical terminal surface 球形端面spherical fiducial surface 球基面spherical refracting surface 球形折射面Spherical outer surface 外球面spherical rotational surface 球型旋轉(zhuǎn)曲面spherical shell surface operator 球殼面算符 返回 spherical surface