“Keyhole Nebula”的概念、定义、翻译、参考文献-科学参考

单词	Keyhole Nebula
释义	Keyhole Nebula Encyclopedia 理学暗星云释 Keyhole Nebula锁眼星云位于明亮的船底座η星云（NGC3372）中心的暗星云，其形状类似锁眼而得名。 Astronomy Keyhole Nebula钥匙孔星云
随便看	regional distribution of cancer regional distribution of hydrologic statistic parameters regional distribution technology regional divergence regional division of villages and small towns in China regional division theory regional dynamic planning regional eco-compensation regional ecological assessment regional ecological carrying capacity regional ecological critical zones regional ecological effect regional ecological evolution regional ecological function regional ecological integrity regional ecological process regional ecological regulation regional ecological risk regional ecological security regional ecological sensitivity regional ecological vulnerability regional ecology regional e-commerce practice regional economic advantage regional economic conflict

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。