In the babylonian system the symbols for 1 and 10 were basic . 在巴比伦记数制中，代表1和10的记号是基本记号。
2.
The first is that it shows the static structure of classifiers in a system ; the second reason is that the diagram provides the basic notation for other structure diagrams prescribed by uml 第一个是它显示系统分类器的静态结构；第二个理由是图为uml描述的其他结构图提供了基本记号。
