This paper describes the model test for stability of the Changzhao rubble masonry dam with concretemortar.
本文介绍了长诏水库混凝土砌石坝的稳定性模型试验的情况。
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Several soldiers mix cement on the street, lifting it up to their colleagues who use it as mortar, placing a concrete block on top of concrete block.
几名士兵在街道上混合水泥，举给同事们当砂浆用，累砌混凝土块。
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A couple of soldiers mix cement on the street, lifting it up by a backhoe to their colleagues who use it as mortar, placing concrete block on top of concrete block.