系统级的凝聚特征将设计知识、几何形状以及联接关系等封装起来，克服了传统特征在功能语义表达上的不完备性。
Encapsulating design knowledge, geometry form and conjunction relationship, the agglomerated feature in system-level is generated to maintain the whole semantic elements of a function.
目的系统讨论三维不完备表的独立性估计和检验方法。
Objective To discuss methods on estimation and test of independent incomplete three-dimensional contingency table.
由于该诊断系统并非基于严密的逻辑推理，而是基于部分信息的经验判断，因此其对测试精度不足和测试信息不完备具有一定的鲁棒性。
Because above method is not a rigorous ratiocinative method, but a empirical diagnosis based on partial information, this method has robustness to the limitation of testing accuracy and information.
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