It is the SCONP principle, which organizes and classifies natural products in a tree structure.
这就是SCONP原理，该原理讲天然产物与树型结构进行组织及分类。
To ensure the quality of structure design and efficient configuration of mechanical products, a part family architecture model based on hierarchy tree constraints was proposed.
为保证复杂机械产品具有良好的设计结构和高效的配置求解，提出了一种基于树状约束的零部件族结构模型。
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