DDO Photometry and Radial Velocities at Galactic Poles (Hartkopf+ 1982)William I Hartkopf,Kenneth M Yossmag(2003)引用 23|浏览3暂无评分关键词radial velocityAI 理解论文溯源树样例生成溯源树,研究论文发展脉络Chat Paper正在生成论文摘要