ul·tra·low frequency 
(ŭl′trə-lō)
(ŭl′trə-lō)n. Abbr. ULF
An electromagnetic wave whose frequency is less than 3,000 hertz.
| 单词 | ultralow frequency |
| 释义 | ul·tra·low frequency (ŭl′trə-lō)n. Abbr. ULF An electromagnetic wave whose frequency is less than 3,000 hertz. |
| 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。