said of waves and vibrations: having a frequency above the range of the human ear, e.g. above about 20,000Hz
using or produced by ultrasonic waves or vibrations
an ultrasonic dog whistle
ultrasonically adv
| 单词 | ultrasonic |
| 释义 | ultrasonic1 |
| 随便看 |
英语词典包含66266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。