“国际标准频率推荐值”的概念、定义、翻译、参考文献-科学参考

单词	国际标准频率推荐值
释义	国际标准频率推荐值 Encyclopedia 工学时间频率计量释 international recommended values of standard frequencies国际标准频率推荐值由国际计量委员会（CIPM）推荐的一组电磁辐射标准频率值。为包含实际复现米定义和秒的次级表示在内的应用而设立。
随便看	region of discontinuity region of elongation region of instability region of limited proportionality region of meromorphy region of nonuniformity region of regularity region of search region of stability region of summability regioselectivity regiospecificity register register allocation register coloring registered architect registered bill registered capital system registered constructor registered cost engineer registered deed registered dietitian，RD Registered Environmental Protection Engineer registered letter registered nurse

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。