primary frequency standard

常见例句

雙語例句

• The cesium atomic fountain used laser cooling and trapping is a new generation primary frequency standard.
  應用激光冷卻與囚禁的銫原子噴泉是新一代的頻率基準。
• Now we are evaluating the uncertainties with the target to establish the new generation time and frequency primary standard, with uncertainty in the order of 10 -15 , of this nation.
  目前我們正在進行不確定度評估，可望不確定度進入10 -15量級，建立我國新一代時間頻率基準裝置。
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