From the Latin nimbus, ‘rain’, and stratus, ‘spread out’, a dark or grey cloud that obscures the Sun, associated with more or less continuous rainfall which makes the cloud base diffuse. See also cloud classification.
科学参考收录了60776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。