系统采用混合工艺设计的方法，即综合运用典型、变异和交互式设计，以产品结构树的形式进行工艺管理。
A mixed way with type, variation and mutual has been adopted to design product in the system and the process is managed by the tree structure of product.
以产品质量、生产成本和生产周期为基础，构造了工艺方案评价分层指标树，建立了工艺设计方案的模糊综合评价模型。
For their estimation a process scheme sorting layer tree is set up. The fuzzy synthetic estimation module is founded based on the product quality, manufacturing cost and production cycle.
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