“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	bronze plates of people of grasslands in North China bronze plate supported by a female on animal-back bronze pot with archery, mulberry-plucking,hunting and battling patterns Bronze Quadrangular Li with A Cutting-off-feet Slave Guarding A Door bronze rectangular seal bronze rhino-shaped wine vessel inlaid with gold, decorated with cloud patterns bronze ritual vessels bronze ritual vessels unearthed at Hunyuan County, Shanxi Province Bronze Ruler with the Inscription“Du Zuo”of the Tang Dynasty bronze sculptures bronze sculptures of Han Dynasty bronze sculptures unearthed at Lijiashan ancient tombs bronze sculptures unearthed at Shizhaishan ancient tombs Bronze Sheng Capacity Measure with the Inscription Shang Lin Gong Fu Bronzes in Shang and Zhou Dynasty bronze smelting technique in ancient China Bronzes of Dian State at Jinning bronzes of Qiuwei bronzes of State Chu unearthed at Shou County, Anhui Province bronzes of the Ba and Shu States Bronzes of the Cai State bronzes of the Chu State Bronzes of the Guo State bronzes of the Huang State bronzes of the Jin State

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。