2. Its design principle, data analysis and description and tools for development are
respectively introduced.
对数据库的设计原则、数据分析与描述及开发工具作了介绍。
3. Hence, 9 and 5° polynomial fitting were selected to interpolate for the satellite positions and satellite clock corrections,
respectively.
因此,分别选择9度和5度多项式拟合插值计算卫星位置和卫星时钟改正(量)。