BV(RI)c photometry of 3C 273 (Dai+, 2009)B Z Dai, Xing Li, Zhong Liu,B K Zhang,W W Na, Ying Wu, Jianming Hao, Yang Xiang,Z J Jiang, L D Zhangmag(2009)引用 23|浏览11暂无评分关键词spectrum,steady stateAI 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