“Engraved Hourglass Nebula”的概念、定义、翻译、参考文献-科学参考

单词	Engraved Hourglass Nebula
释义	Engraved Hourglass Nebula Encyclopedia 理学行星状星云释 Engraved Hourglass Nebula沙漏星云位于苍蝇座，标准历元J2000的赤经13h39m35.07s，赤纬-67°22′51.74″的年轻行星状星云。因其形状像西方记录时间的沙漏而得名。又称MyCn18。
随便看	prestressing prestressing technique prestressing tendon prestretching prestripping prestructure presubscript presumption presumption of causation presumption of constitutionality presumption of fault presumption of innocence presumptive pre-supernova pre-supernova binary pre-supernova object presuperscript pre-support presuppose presupposition pre-swirl pre-swirl in turbine cooling air system presynaptic element presynaptic inhibition presynaptic membrane

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。