A small and insignificant constellation of the southern sky, representing a pair of draughtsman’s compasses. Its brightest star, Alpha Circini, is magnitude 3.2.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。