... 第二级反应 second-order reaction 第二级〔效应〕项 second-order term 次级X射线 secondray X-rays ...
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In this paper we give a way by which find general term formula of second order linear recurrence sequence by means of matrix theory.
文章借助矩阵理论解决了一般二阶线性递推数列通项公式的求法问题。
The cross sections for such processes are calculated in second order perturbation theory and expressed in term of the intensity of laser radiation and the nuclearmatrix elements.
用二阶微拢论计算这一截面，结果表示为核矩阵元和激光电场强度的函数。
It is because that the coupling term due to polarization and the ignored term due to the weakly guiding approximation are as small as the second order, and they are just the same.
最后认为这是由于偏振耦合项是二阶小量，而弱导近似忽略了与之相等的二阶小量耦合项。
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