The concepts of strong PS-irresolute open mapping and strong PS-irresolute closed mapping are introduced in L-spaces and their properties are researched.是什么意思_The concepts of strong PS-irresolute open mapping and strong PS-irresolute closed mapping are introduced in L-spaces and their properties are researched.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句