“环状星云”的概念、定义、翻译、参考文献-科学参考

单词	环状星云
释义	环状星云 Encyclopedia 理学行星状星云释 Ring Nebula环状星云位于天琴座的典型的行星状星云。星表中的编号为M57和NGC6720。位于北天区，距离地球2300光年，目视星等8.8，半径约1.3光年。由于面向地球呈环状结构，并处于明亮的织女星以南，长期以来备受关注。 Astronomy annular nebula; ring nebula环状星云
随便看	University Benchmark Association university charter University College London: Department of Information Studies (UK) University College London Libraries university council university culture university extension movement university for old age university governance university/institute geographical education university institutes of technology university logistic socialization University of al-Karaouiine University of al-Qarawiyin University of al-Quaraouiyine university of applied sciences university of applied technology University of Auckland University of Basel University of Bergen University of Bologna University of British Colombia University of British Columbia University of British Columbia and Laval University Telescope University of British Columbia Museum of Anthropology

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。