| 单词 | irradiance |
| 释义 | irradiance Symbol E. The radiant flux per unit area reaching a surface; in SI units it is measured in watts per square metre (W m-2). Irradiance refers to electromagnetic radiation of all kinds, whereas illuminance refers only to visible radiation |
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物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。