本文在LF双拓扑空间中给出双-（半-）良紧集的概念，并讨论了它们的性质和相互关系，获得了一系列结果。
In this paper we give conpcept of pairwise (sime-) well compact sets in LF bitopological spaces and we discuss their property and relation.
提出并深入研究了高频脉冲交流环节逆变器电路拓扑族及其双极性移相控制策略。
A circuit topology family of inverters with high frequency pulse AC link and a double polarities phase-shifting control strategy are proposed and deeply investigated.
提出并深入研究了高频脉冲交流环节逆变器电路拓扑族及其双极性移相控制策略。
A circuit topology family of inverters with high frequency pulse AC link and a double polarities phase shifting control strategy are proposed and deeply investigated in this paper.
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