“氢钟”的概念、定义、翻译、参考文献-科学参考

单词	氢钟
释义	氢钟 Encyclopedia 工学频率标准释 hydrogen maser氢钟以氢原子基态两个超精细能级间跃迁频率为参考（频率为1.420405751786吉赫兹），通过锁定环路来锁定晶体振荡器，使晶体振荡器能够输出高稳定度和高准确度时间频率信号的原子钟。氢钟采用的工作原子为氢原子，又称氢原子频率标准（简称氢频标）、氢原子钟。 Physics 原子、分子物理学 hydrogen clock氢钟 Astronomy hydrogen clock氢钟
随便看	measurement scales Measurements of Non-Volant Small Mammals Measurements of Rodent’s Skull measurement standard measurement standard for heterodyne laser interferometer measurement standard forlarge-scale dimensional spatial coordinate measurement standard of coordinate measuring machine measurement standard of one dimensional multi-size artifacts measurement standard of radiation measurement standard of two dimensional multi-size artifacts measurement standard sampling test measurement standards for general purpose metric screw threads measurements with angle gauge measurement system measurement system for aircraft assembly Measurement system of lithography machine measurement technique of nuclear test measurement technology for multi-phase flow measurement theory measurement uncertainty measurement unit measurement validity measurement while drilling system measurement—control for crushing and screening process measure mileage

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。