- frequency metrology
- 频率: frequency; rate
- 计量学: metrology
- 时间频率计量: metrology of time and frequency
- 计量学: metrology◇计量学家 metrologist
- 频率计: cycle counter; cymometer; cymometre; fm frequency meter; frequency counter; frequency indicator; frequency meters; frequency teller; frequencyindicator; frm frequency meter; hz-meter; ondometer
下载手机词典可随时随地查词查翻译