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jiayou201101: 金币+20, 翻译EPI+1, ★★★★★最佳答案 2015-02-07 17:11:47
Therefore, with the increasing of the crystal X/Y ratio, the lifetime of the blue up-conversion energy level was decreased, indicated that the X/Y ratio increasing can promote radiative transitions of the up-conversion ligh energy level, macroscopically characterized by the increasing of up-conversion fluorescence intensity .
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