“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	direct electric heating method direct energy conversion operation direct ethanol fuel cell direct evaluation of external corrosion of oil and gas pipelines direct evaluation of internal corrosion of oil and gas pipelines direct exchange interaction direct expansion method direct-expansion refrigeration direct expense coefficient direct extrusion direct factor direct feeding system of electric traction direct fermentation direct finance direct financial payment direct-fired agriculture and forestry biomass for cogeneration of heat and power direct fission yield direct flotation direct flow direct force/aerodynamic blended control direct force control direct formic acid fuel cell direct formic acid fuel cell, DFAFC direct-gap semiconductor direct georeferencing

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。