...据 Keywords: Concrete, Internal crack, 3D imaging, Volume rendering, Impact-echo 1. [gap=276]关键词：混凝土，内部裂纹，体积渲染，三维成像，影响回波1。
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水平连铸圆管坯中间裂纹的形成分析.doc 关键词：中间裂纹 水平连铸 圆管坯 [gap=501]Key word：Internal Crack, HCC, Tube Bloom
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slab internal crack 板坯内裂
internal crack spread 内置裂纹扩展
Spalling out of internal crack 内裂剥落
crack due to internal stress 内应力裂纹
internal axial crack 轴向内部裂纹
The method and results of the study on formation condition for internal crack in continuous casting slab were reviewed.
评述了连铸坯内裂纹形成条件的研究方法和结果。
The internal crack of bloom is analyzed, and some improvement measures are put forward, which got some effect through the production.
本文分析了方坯低碳钢内部裂纹产生的原因，并提出了改善措施，通过生产实践取得了一定的效果。
The result reveals that the practical secondary cooling system is not suitable and easy to cause quality defects such as internal crack.
结果表明，目前的二冷制度不甚合理，易产生内裂纹等质量缺陷。
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