Followed, based on the IR cataloguedata, an approach for modelling the celestial background observed in any time, on any eyeshot and at any visual angel, is presented.
提出了一种基于星表数据的建模和仿真方法，模拟在任意观测时刻、任意观测地点观测到的星空背景。
2
The actual books constituted the data, the catalogue cards the metadata.
具体的一本本书构成了整个数据库，而这些目录卡片则构成了元数据库。
3
The data on Gliese 710, an orange dwarf star, comes from position and velocity measurements of about 100, 000 stars in the Hipparcos Catalogue published in 1997.