• A new building material patent: concrete mixed material with middle and low strength is invented.

    介绍了一最新建材专利技术中低强度等级混凝土掺合技术。

    youdao

  • The sand is lack in the western China, so preparing self-compacting concrete with low and middle strength with Super Fine Mountain Sand and Artifical Sand is necessary.

    西部地区河砂匮乏,应用特机制砂配制中低强度等级的自密实混凝土西部地区迫切需要开发的混凝土工程技术。

    youdao

  • The sand is lack in the western China, so preparing self-compacting concrete with low and middle strength with Super Fine Mountain Sand and Artifical Sand is necessary.

    西部地区河砂匮乏,应用特机制砂配制中低强度等级的自密实混凝土西部地区迫切需要开发的混凝土工程技术。

    youdao

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