“ultrasonic frequency”概念、定义、翻译-科学时代

单词	ultrasonic frequency
释义	广播影视词汇手册 ultrasonic frequency 超声频（率）
随便看	angle of yaw angle onion angle onion angle operating range angle output angle pass angle perspective angle pipe angle-plus-angle angle-ply laminate anglepod angle-preserving mapping angle probe angle protractor angle resolution angle resolution angle resolved photoelectron spectroscopy (ARPS) angle-reverse-angle angle rod angle scale angle scale angle search system angle section angle sensor angle shark

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。