This paper calculates the expression between minority-carrier lifetime and switching time in short diode by analyzing the continuity equation when considering the surface recombination.

并使用连续性方程，在考虑表面复合过程的情况下，提出了短二极管的少子寿命计算公式。

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Spin-on platinum diffusion was used to introduce recombination center in order to reduce the reverse recovery time TRR of fast recovery diode.

采用直拉单晶硅片代替成本较高的外延硅片，采取铂扩散的方法引入复合中心，从而控制少子寿命以减少快恢复二极管的反向恢复时间。

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In time of social transfer, the flow and recombination of the colony resources in the course of urbanization has led to the formation of urban puny colony and its deteriorating situation.

在社会转型时期，城市化进程中群体资源的流动和重组导致了城市弱势群体的产生及严重状况；经济地位和社会地位的长期低下是此类人群在现阶段的基本特征。

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