Abstract: the environmental effects are analyzed and the secondary lining concrete durability is studied in the design for Qingdao Metro Line 3.

摘要：分析了青岛地铁3号线所在地域的环境作用，并对地铁二次衬砌混凝土的耐久性进行研究。

youdao

Abstract: the environmental effects are analyzed and the secondary lining concrete durability is studied in the design for Qingdao Metro Line 3.

摘要：分析了青岛地铁3号线所在地域的环境作用，并对地铁二次衬砌混凝土的耐久性进行研究。

youdao