“频率基准”的概念、定义、翻译、参考文献-科学参考

单词	频率基准
释义	频率基准 Encyclopedia 工学【电子计量】释 primary frequency standard频率基准直接复现秒定义的测量装置。又称秒长基准。
随便看	nearness product space nearness space near neutral stress corrosion near noble number near-normal distribution near-pencil near point near range appeared compressed near real-time near reflex of the pupil/pupillary accommodation reflex near resolvable design near-resolvable design near ring near-ring near-ring illumination near-ring module near-selection theorem NEAR Shoemaker NEAR Shoemaker probe nearshore sediment observation nearshore wave nearshore wind power engineering nearside of the Moon near sight nearsighted eye

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。