Abundances in planetary nebulae (Chiappini+, 2009)Cristina Chiappini,Slawomir K Gorny,Grazyna Stasinska,Beatriz Barbuymag(2010)引用 22|浏览4暂无评分关键词planetary nebulaAI 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