这个就是高度可配置的绘图类库，当然，他也是非常容易用的。

Here's yet another charting class library with a high degree of configurability, that is also easy to use.

youdao

它可分文本演示类、象再现类、程模拟类、理示意类、算绘图类等。

It can be classified into different categories, such as text demonstration, phenomenon reappearing, procedure simulation, principle illustration, calculating and drawing, etc.

youdao

你可以简单的使用Rational Rapid Developer的“Class Architect”中提供的友好的绘图工具来拖、放和连接类和包。

You can simply use the friendly drawing tools to drag, drop, and connect classes and packages on the canvas of the "class Architect" feature within Rational Rapid Developer.

youdao