水利工程的修建和土地利用方式的改变使大清河下游湿地保护面临严峻的形势。
Water conservancy construction and the change of land use make the protection of Daqinghe downstream wetland facing a severe situation.
对CK B聚合物水泥砂浆的材料、配合比以及防渗护面施工程序、技术要求、质量和安全保障作了较详细的介绍。
Here, the mix ratio of CKB polymer cement mortar, construction programme and technical details, quality and safety guarantee of the facing works are described.
介绍黄骅港一期工程引堤护面栅栏板表皮混凝土脱落的原因和处理措施。
The causes and treatment measures of concrete peeling of the approach embankment facing barrier board in Huanghua Port Phase I Project are introduced.
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