单词 | sun protection factor |
释义 | sun protection factor n. Abbr. SPF A measure of the degree to which a sunscreen protects the skin from ultraviolet radiation, expressed as a number representing the ratio of the minimal ultraviolet dose required to produce erythema with and without sunscreen. |
随便看 |
英语词典包含135693条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。