“秒长国家计量基准”的概念、定义、翻译、参考文献-科学参考

单词	秒长国家计量基准
释义	秒长国家计量基准 Encyclopedia 工学频率标准释 national primary frequency standard秒长国家计量基准直接复现秒定义的实验装置。输出的标准频率具有最高计量学特性，作为统一全国秒长量值（频率量值）最高依据的计量器具，全国只有一套。
随便看	underground diaphragm wall foundation underground drilling underground driving system underground dump truck underground economy underground electromagnetic wave method underground elevating platform vehicle underground energy storage system underground engineering geophysical exploration underground engineering support underground engineering survey underground equipment pinpoint underground explosion underground explosion-proof operation safety underground explosive magazine underground explosives charging vehicle underground expressway underground facilities for urban lifeline system underground facilities protection underground facility underground fermentation underground film underground fire engineering underground freight transportation system underground gas storage

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。