caesium frequency standard
... frequency laboratory standard signal generator 实验室用高频标准信号发生器 caesium frequency standard 铯频标 active frequency standard 主动频率标准 ...
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短语
铯频率标准
cesium frequency standard
铯束原子频率标准
Cesium atomic beam frequency standard
;
cesium frequency standards
原级铯射束频率标准
primary cesium beam frequency standard
铯束频标
Cesium beam frequency standard
铯原子束频率标准
cesium beam frequency standard
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