secondary memory短语⁸⁴³²⁰⁺⁸ 基本例句 辅助存贮器 A great number of spatial indexing structures based on secondary memory have been proposed for handling the massive spatial data stored in the spatial database rapidly and efficiently. 为了快速、有效地处理存储于空间数据库中的海量空间数据，专家学者提出了大量的基于磁盘的空间索引方法。 ceaj.org