Construction control survey and construction moulding survey are the guarantee of that engineering building and the size of the details meet design.
施工控制测量和施工放样测量是各项工程建筑物及细部尺寸按设计要求定位的保证。
Survey of goaf is a problem demanding prompt solution in the engineering building and production of coal mine.
采空区探测是工程建筑和煤矿生产中亟待解决的问题。
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