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喷泉钟
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喷泉钟
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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
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pachytene stage
pacific abalone
Pacification Commission
pacification commissioner
Pacific Audio & Video Co. Ltd.
Pacific Coast Ranges
Pacific cobalt crest
pacific cod
Pacific Community
Pacific Decadal Oscillation
Pacific Design Center
Pacific Grove
Pacific industrial zone
Pacific Islander Labourers Act
Pacific Islands Forum
Pacific Islands Forum Fisheries Agency
Pacific-Japan (East Asian-Pacific) teleconnection pattern
Pacific meridional mode
Pacific-North American teleconnection pattern
Pacific Ocean
Pacific Ocean to the east of Taiwan Dao
pacific oyster
Pacific plate
Pacific Railroad
Pacific railroad
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