| 单词 | spot group |
| 释义 | spot group [`spät ´grüp] ASTROPHYSICS A complex formation of the sun's surface consisting of a sunspot with several umbrae surrounded by a single penumbra, or of several sunspots which are close together and clearly associated. |
| 随便看 |
|
科学参考收录了103327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。