说明：  现在有更多的人想学习UML，但由于UML的复杂性，仅通过UML的标准文献与国内目前的关于UML的资料来掌握使用它不是一件轻松的事。对它的使用，关键是要用它简明准确地建立模型。这样，人们就能从全局把握握握复杂系统的全貌及其组成间的联系。为了达到这样的目的，本文要阐明UML的要点，并对UML所推荐的软件源码建模过程RUP（Rational Unified Process）做一简介，以作为一种应用UML的
(Now, more people want to learn UML, but because of the complexity of the UML, only by the UML standard literature and current information on UML to master the use of it is not an easy thing. Its use, the key is to use it concise and accurate model. That way, people will be able to grasp from the global links between shook the whole picture of the complex system and its components. To achieve this purpose, to clarify the main points of the UML, software source code and UML recommended modeling process RUP (Rational Unified Process) a brief introduction, as an application of UML)