Visual position measurements in astrometry are most affected .

天体测量学中视位置的测量受影响最大。

Most astrometry software packages use the guide star catalogue , so a cd-rom drive is also required .

很多天文软件包都使用引导星目录库，所以配置一个光驱也视必要的。

The work of this paper may offer some reference and gist for research on astrometry and geodesy .

本文的工作可为天文大地测量的研究提供一定的参考和依据。

Astrometry is the study of the precise measurements of the positions and movement of stars .

天体测量学研究的是恒星的精确位置和运动轨迹。

The conventional methods of geodesy and astrometry have an important meaning whether in basic science or in the construction of national economy and national defence .

摘要大地天文测量无论在基础科学，还是在国民经济和国防建设中都具有重要的意义。