A real optical frequency comb spans the entire visible spectrum of light, and has very fine, evenly spaced teeth.
实际光学频率梳横跨整个可见光谱，各齿极细并均匀分布。
In addition, NIST has shown that extremely stable microwave signals can be generated from optical frequency combs.
另外，NIST还发现可以从光学频率梳产生非常稳定的微波信号。
The history, present situation and future of optical frequency standards and optical frequency measurements were presented.
本文综合评述了光频标和光频测量研究的历史、现状和未来。
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