In this paper, an abstract mixed problem of a class parabolic differential equations is generalized from the dam body temperature during the stratified placement of concrete dam.
本文从混凝土坝分层浇筑坝体温度的实际问题中，抽象出一类抛物偏微分方程组的混合问题，并且证明了其广义解的存在唯一。
The intensity of concrete aggregates production changes with that of concrete placement during construction of a concrete dam.
混凝土坝施工过程混凝土浇筑强度变化，其骨料生产强度也应随之。
The horizontal construction joint treatment of Ertan Arch dam concrete, concrete placement of dam base and connection efficiency examination between concrete joints and concrete with dam base.
介绍了二滩拱坝混凝土水平施工缝处理及坝基面混凝土浇筑和检查混凝土缝间、混凝土与坝基结合的效果。
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