Concept of variational geometric constraints network (VGCN) is presented, and application of the network to computer aided tolerancing is studied.
提出变动几何约束网络概念，并将此网络应用于计算机辅助公差设计领域。
In the sixth chapter, all of the work in this dissertation is summed up. The future research of computer-aided tolerancing is prospected.
第六章：对全文进行总结，对计算机辅助形位公差的设计应该进一步开展的工作进行探讨和展望。
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