Combustion mode transition is a valuable and challenging research area in dual-mode scramjet engines.The thermal behavior of an isolator with mode transition in
Photosynthesis, enzyme activities and metabolite pools associated with primary carbon metabolism in leaves were studied in O. grandiglumis and O. alta(wild rela
摘要:无线局域网在当今社会中得到越来越广泛的使用,成为计算机网络中至关重要一部分,但因其输介质的特殊性,安全问题成为一个阻碍其发展的问题。该文分析了当前无线局域网普遍存在的安全问题并结合无线局域网系列标准从不同侧面给出相应的保障措施。 关键词:WLAN;网络安全;安全保障 中圖分类号:TP393文献标识码:A文章编号:1009-3044(2011)24-5858-02 The Researc