“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	combined spinal and epidural nerve block combined sprinkler and foam system combined sprinkler-foam system combined standard uncertainty combined starter combined station combined stress waves combined support combined technology of pond and wetland combined test combined three-electrode array combined tool combined toxicity Combined train combined transportation of open pit combined transport by air and land combined vaccine combined ventilation combined warping-sizing machine combined water combined water treatment combined weave combined weft-knitted structure combined with absorber and reflector/resonator silencer combined working hours

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。