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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
multispectral scanner,MSS
multispectral scanning device
multispectral sensor
multi-speed disk
multi-sphere coupled numerical model
multi-split air conditioning (heat pump) systems
multistable
multistable perception
multistable polyhedron
multistable system
multistage
multistage allocation process
multi-stage bubble column reactor
multistage combustion model
multistage competition
multi-stage control chart
multistage controllable system
multistage controlled process
multistage decision
multi-stage decision making
multistage decision problem
multistage decision process
multi-stage eccentric pump for mine
multistage game
multi-stage gas gathering process with atmospheric temperature separation
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