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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
income decision method
income distribution of land circulation
income distribution policy
income effect and substitute effect of labor suppy
Income Exempt
income expenditure theory
income gap
income-maintenance programs
income measure of GDP
income mismatch risk
income mobility
income of rural households
income policy
income poverty
income source-based tax jurisdiction
Income statement
income tax law
incoming beam
incoming call
incoming channel
incoming edge
incoming quality control
incoming quality control, IQC
incoming signal
incoming subspace
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更新时间:2026/7/21 6:17:57