“行星状星云”的概念、定义、翻译、参考文献-科学参考

单词	行星状星云
释义	行星状星云 Encyclopedia 理学行星状星云释 planetary nebula行星状星云其中心有一向白矮星过渡的热星，且由稀薄电离气体组成有明晰边缘的小圆面状星云。星云为该中心星所抛出，正向外膨胀，并由中心星的紫外辐射照射而发光。 Physics 交叉学科天体物理学 planetary nebula行星状星云 Astronomy 全称：planetary nebula。缩写：PN行星状星云
随便看	Seven-Step Poem Seven Stimuli seven-style seven subordinated guard-units outside Jiayu Pass Seven Swords and Thirteen Heroes Seventeen Moments of Spring seventeen-point cubic Seventeenth-Century Canal Ring Area of Amsterdam inside the Singelgracht Seventeenth National Congress of CPC Seventh Day Adventist Seventh-day Adventist Seventh-day Adventist Church seventh five-year plan of China Seventh Hound Seven Treaties of Theravāda Seven Treatises Seventy-five Constituent Elements in Five Categories seven types of criminal homicide seventy-two intermittently connected lakes Seven Up！ Seven Warring States Seven-Year Program to Help 80 Million People Out of Poverty Seven Years’War sever acute respiratory syndrome，SARS several

科学参考收录了854744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。