“猎户座大星云”的概念、定义、翻译、参考文献-科学参考

单词	猎户座大星云
释义	猎户座大星云 Encyclopedia 理学发射星云释 Orion nebula猎户座大星云位于猎户座的发射星云。用肉眼观察，猎户座中构成“宝剑”的有三颗星，中间一颗是较模糊的亮斑，它不是单颗星，而是一个星云，即猎户座大星云（星表编号为M42和NGC1976）。
随便看	patch-corridor-matrix model patched conic approximation patched document patchiness distribution of marine organisms patching condition patchouli alcohol patch panel patch plug patchplug patch test Patchwork patchwork poetry patchy particle patella patellar luxation of canine Patel–Teja equation patent applicant patent application document patent application priority patent archives management patent assertion entities patent barriers patent commissioning Patent Cooperation Treaty，PCT patent ductus arteriosus

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。