On basis of that, a model which describes the evaluation for quality of large complex aeronautic product is put forward.
在此基础上，提出了一种大型复杂航空产品的质量评估模型。
Considered the relationship among failure modes, a failure risk evaluation and optimization method for mechanical product design scheme based on knowledge model was proposed.
考虑失效模式间的关联性，提出了一种基于知识模型的机械产品设计方案失效风险评估与优选方法。
On the other hand, if possible, a physical model to meet the product requirements, and according to the initial ratio of simplified, so that anyone can design and modeling of the correct evaluation.
另一方面，如果可能，一个物理模型以符合产品要求的方式，并且按初始比例简化，以便使任何人都能在设计和造型上做出正确的评价。
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