“umbra and penumbra of the sunspot”的概念、定义、翻译、参考文献-科学参考

单词	umbra and penumbra of the sunspot
释义	umbra and penumbra of the sunspot Encyclopedia 理学黑子本影和半影释 umbra and penumbra of the sunspot黑子本影和半影太阳黑子的组成部分（见太阳黑子）。
随便看	gas emission from adjacent coal seams gas emission from goaf gas emission in mining seam gas engine-based distributed energy system gas envelope gaseous gaseous collapse gaseous conduction gaseous detector gaseousdetector gaseous dielectric breakdown gaseous diffusion method gaseous diffusion process gaseous diffusion process; gaseous diffusion method gaseous disk gaseous emission nebula gaseous halo gaseous hydrocarbon inclusion gaseous insulating material gaseous mass gaseous nebula gaseous phase flame-retardant mechanism gaseous planet gaseous pollutants processing gaseous polymerization

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。