一个很好的XML开源的程序，里面有不少功能。-XML open source a good thing, function is all

the structures of math exp is given in a XML form so with tree to evaluate the expression

实验室设备管理系统，采用webservice的技术，需要部署到IIS上，B/S的架构。(Laboratory equipment management system, using WebService technology, needs to be deployed on IIS, which based of the B/S architecture.)