中文摘要：

影响属性的可维护性被分析，他们精明的方法被给的重量和价值，和可维护性模糊评估方法基于相对亲密被建议。根据在虚拟环境操作的维护任务模拟，可维护性虚拟评估模型被为产品的每个可替代的单位分析维护任务造。最后，案例研究被给在主要登陆齿轮之上基于某个类型的系统民用的飞机，和结果显示模型对可维护性合适质的评估和罐头支持可维护性同时发生的事件设计。

英文摘要：

Maintainability influencing attributes are analyzed, their weight and value calculating methods are given, and the maintainability fuzzy evaluation method is proposed based on the relative closeness. According to the maintenance task simulation operated in virtual environment, the maintainability virtual evaluation model is built by analyzing the maintenance task for each replaceable unit of product. At last, a case study is given based upon the main landing gear system of a certain type civil aircraft, and the result indicates that the model is suitable for maintainability qualitative evaluation and can support maintainability concurrent design.