“ultrasonic frequency”概念、定义、翻译-科学时代

单词	ultrasonic frequency
释义	机械工程词汇手册 ultrasonic frequency 超声频率
随便看	public switched telephone network Public Switched Telephone Network public switched telephone network public-switched telephone network Public Switched Telephone Network (PSTN) Public Switched Telephone Network (PSTN) public switched telephone network (PSTN) public-switched telephone network (PSTN) Public Switched Telephone Network--Public Switched Telephone Network (PSTN) public switched telephone network--public switched telephone network (PSTN) public-switched telephone network--public-switched telephone network (PSTN) public telegraph public telephone public television public television public tender public tender public theatre public toilet public tragedy public transport public transportation advertising public transportation media public transport information system public transport information system

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。

ultrasonic frequency