I am developing an application which is similar to native contact book app of iphone. I want开发者_JAVA技巧 to add additional property/field in native iphone address book database. e.g. network carrie
1、水晶头5类和6类结构不一样，超五类普遍用一件单排，六类普遍用两件式双排或者三件式双排，这样才能达到六类的测试标准，六类水晶头里面的8根触点是上下错开分成两排的，而五类水晶头里面的8根触点则是一字排
加载中,请稍侯......