确认你的OWL-S Editor已经安装到Protege里，启动Protege，新建一个owl文件类型的工程，在菜单project->config里勾选上owls选项，按确定后Protege的主界面会多出一个OWL-S Editor页-sure your OWL-S has been installed to the Editor Protege, Protege start, a new type of document owl, the menu project-gt; Li tick

基于qwt第三方插件绘制正弦函数曲线，实现曲线的放大、缩小、移动。坐标动态变化等功能，运行前要安装qwt，代码是完整的，不要没有安装qwt就说代码不完整，就给差评的。看清楚说明了再下载-this is the sin curve base on the third plug-in components named qwt .before running make sure that it has installed the qwt

基于qwt第三方插件实现一个模拟示波器的动态显示，可以动态的刷新波形，可以调整波形的赋值和频率的大小。运行前需要安装qwt，代码是完整的，注意需要安装qwt，不要运行不了就给差评。-this is a dynamic-display oscilloscope based on the third plug-in components qwt, before running ,make sure you installed the qwt.