“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	land treatment of wastewater from livestock and poultry farms land treatment system land trust land type land type map land unit landup performance of carrier-based aircraft land usage permit system land use land use and cover change Land Use and Land Cover Change Project land use arrangement planning of central city area land use classification land use control land use control system land use conveyance land use degree land-use density land used for industry and mining storage purposes land used for public manegement and service land used for special purposes land-use division land use engineering land use information land use intensity

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。