The method measures the similarity of durability index series of components by the use of similarity coefficient and forms a fuzzy equivalence matrix with sort function.
该方法利用相似系数在各构件的耐久性指标序列之间进行相似性度量，并形成了具有分类功能的模糊等价矩阵。
Taking C30 concrete for example, analysis the durability index of common concrete and co-dope concrete, and proved the engineering application feasibility of fly ash for co-dope concrete.
本文以C 30为例，分析了粉煤灰双掺混凝土和普通混凝土耐久性指数，论证了粉煤灰双掺混凝土工程应用的可行性。
As an important evaluating index reflecting the quality of materials, natural durability can directly determine the using longevity of materials.
作为一项反映材料优劣的重要的评价指标，天然耐久性直接决定了材料的使用寿命。
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