... active hydrogen atom 活性氢原子 Active Hydrogen Maser 氢钟 active hydrogen cathode 活性氢阴极 ...
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辅助电子学系统是氢钟的一个非常重要的部分。
The Supporting Electronics System is a very important Part of the H-clock.
介绍了国际和国内氢钟守时的进展概况，并进行了一些讨论。
The progress situations of Hydrogen clock in the time keeping at abroad and home were introduced, and carry outs some discusses.
我们对佘山vl BI站的两台氢钟的辅助电子学系统进行改进。
We improve the Supporting Electronics System of the two sets of H-clocks at SherShan VLBI station.
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