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The nonradiative changeover premiums Adhere to the method WNR = W (0) exp(-alphap), where p is the quantity of phonons matching the Vitality gap. The nonradiative changeover charges of Er3+ exhibit temperature dependence consistent with the multiphonon leisure concept. In Tm3+ the temperature dependence of nonradiative peace premiums is intricate f

27Local economists have seemed into their crystal balls and witnessed something fairly terrible.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》23Sometimes, having said that, the crystal type of the silicate inclusions is noticed to resemble more carefully the internal framework of diamond than