The necessity, object and meaning of mine safety evaluation are discussed, the evaluation method and process are sorted and narrated.
讨论了开展煤矿安全评价的必要性，目的和意义，对当前煤矿安全评价进行了分类，论述了评价方法和评价程序。
Leading evaluation method into design process, the generation strategies of well-constrained VGCN is discussed, and the theories of variational geometric constraints network are established.
并将该评价方法引入设计过程，研究完全约束的变动几何约束网络的生成策略，从而建立了变动几何约束网络理论。
And study on the case in cutting combining 6112 bent axles. Proving this percent environment evaluation method in the manufacture process can be used. And it deserve popularizing.
并且结合常见的6112曲轴的切削加工进行案例研究，证明了此制造过程百分制环境评价方法切实可用，值得推广。
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