时钟跃迁
The clock transition frequency and linewidth of the clock transition line were obtained by scanning the microwave frequency in a narrow region.
通过减小微波扫描的 频率范围,得到钟跃迁频率和谱线线宽.（有道词典）
也许和原子钟有关
时钟跃迁
The clock transition frequency and linewidth of the clock transition line were obtained by scanning the microwave frequency in a narrow region.
通过减小微波扫描的 频率范围,得到钟跃迁频率和谱线线宽.（有道词典）
也许和原子钟有关