“蟹状星云”的概念、定义、翻译、参考文献-科学参考

单词	蟹状星云
释义	蟹状星云 Encyclopedia 理学蟹状星云释 Crab Nebula蟹状星云金牛座的一团无定形的膨胀气体云。星表中的编号为M1和NGC1952。标准历元J2000为赤经05h34m31.94s，赤纬+22°00′52.2″。角径为7′×4′，视亮度相当于9等星。 Astronomy Crab Nebula蟹状星云
随便看	ecological trend study ecological type ecological unit ecological validity ecological value ecological value of forest ecological veterinary science ecological view of Chinese landscape architecture ecological water ecological water demand ecological water level ecological water requirement ecological water utilization ecological zoning ecology ecology-based forest harvesting ecology exhibition ecology of education ecoloogical anti-bacteria fiber eco-lubricant eco machine tool ecomap Ecomat eco-material ecomaterials

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。