针对铷频标日频率漂移率的指标测试要求，文中采用时差法，设计了铷频标日频率漂移率测量装置。

For testing daily frequency drift of rubidium frequency standard, this paper used the method of time difference, designed daily frequency drift measuring equipment for rubidium frequency standard.

youdao

youdao

生日和周年纪念日要标在日历上。

Mark birthdays and anniversaries on the calendar.

youdao

Percent daily--no, I don't know why that's not on there actually.

日百分比,我也不知道它为什么没被标出来

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选