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喷泉钟
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喷泉钟
Encyclopedia
工学
频率标准
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fountain clock
喷泉钟
通过激光冷却技术制备冷原子团,然后利用激光频率的特定变化把原子团上抛,由于重力作用,原子团到达顶点之后自由下落形成原子喷泉,在冷原子上升下落过程中将微波频率锁定到原子基态超精细能级跃迁的频率上,从而得到钟跃迁频率的原子钟。又称冷原子喷泉钟。
Astronomy
fountain clock
喷泉钟
随便看
electroacoustic
electroacoustical
electroacoustical reciprocity theorem
electroacoustic metrology
electro-acoustic reciprocity
electroacoustic reciprocity principle
electro-acoustics
electroacoustics
electroacoustic transducer
electroacoustic wave
electro-active polymer
electroactive polymer
electroactive polymer actuation
electroactive substance
electroacupuncture apparatus
electro-acupuncture therapy
electro-adsorption
electroanalysis
electroanalytical chemistry
electroanalytical chemistry of cell
electrobasograph
electro-bath
electrobath
electrobiology
electro-brush plating
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