“马头星云”的概念、定义、翻译、参考文献-科学参考

单词	马头星云
释义	马头星云 Encyclopedia 理学暗星云释 Horsehead Nebula马头星云位于猎户座亮星云IC 434（由猎户座σ星所电离）中的暗星云。因形状类似马头而得名。 Astronomy Horsehead Nebula马头星云
随便看	director surface director team director-unit system director workbench directory directory archival retrieval tools directory-based cache coherence protocol directory database Directory of Open Access Journals Directory of Publishing directory search engine directory sorting direct output laser module direct oxidation deposition technology of ceramic matrix composites directpath direct photon direct pipe method direct plan direct plate direct plummet observation direct policy search direct potentiometry direct power direct prism direct probability integral method

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。