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多级配砾石土反滤层工作机理及设计方法的研究,国内外均刚开始。
It has just begun to study the mechanism and design method of broadly graded soil filter.
youdao
-
多级配砾石土反滤层工作机理及设计方法的研究,国内外均刚开始。
It has just begun to study the mechanism and design method of broadly graded soil filter.
youdao