lethargy 发表于 2025-3-26 21:27:59

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易受刺激 发表于 2025-3-27 01:37:51

Optical Frequency Combcond, using frequency standards of Cs, or Rb, by optical frequency comb, we can set up a novel technique for realistic realization of length of the SI unit Meter (Primary Standard). By means of stabilizing and characterizing the two different constraints – the carrier offset frequency f. and the rep

Confound 发表于 2025-3-27 06:59:02

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兽群 发表于 2025-3-27 10:37:32

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粗俗人 发表于 2025-3-27 16:54:58

onfictional work, between his literary and political commentary, and as his political commentary has proceeded over the decades. This analysis of his work reveals his insights into socio-political matters.978-1-137-27092-4978-0-230-11359-6

acquisition 发表于 2025-3-27 19:03:29

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