“证词”概念、定义、翻译-科学时代

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。

单词	证词
释义	哲学词汇手册证词 attestation
随便看	ultrasonic cement analyzer ultrasonic centrifuge ultrasonic chemical process ultrasonic cleaner ultrasonic cleaning ultrasonic cleaning ultrasonic cleaning ultrasonic cleaning ultrasonic cleaning agent ultrasonic cleaning bath ultrasonic cleaning equipment ultrasonic cleaning machine ultrasonic current ultrasonic current meter ultrasonic delay line ultrasonic delay line glass ultrasonic depolymerization ultrasonic depth finder ultrasonic dispersion ultrasonic Doppler blood pressure transducer ultrasonic drawing ultrasonic drill ultrasonic drilling ultrasonic echo method ultrasonic effect