| 单词 | mandatory level |
| 释义 | mandatory level [`man·dǝ´tȯr·ē `lev·ǝl] METEOROLOGY One of several constant-pressure levels in the atmosphere for which a complete evaluation of data from upper-air observations is required. Also known as mandatory surface. |
| 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。