请输入您要查询的字词:
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
primary extraction
primary factor
primary feed
primaryfermentation
primary field
primary [fission] fragment
primary fission fragment
primary fission product
primary fissure
primary flaw
primary focal point
primary follicle
primary fossil
primary fragment
primary frequency standard
primary gas thermometry
primary glass making
primary glaucoma
primary glomerular disease
primary group
primary growth
primary gustatory cortex
primary halo zoning model of uranium
primary hardness standard machine
primary health care
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。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2026/7/7 15:28:09