properties of hardened concrete
... 硬化强度：Hard strength 硬化混凝土性能：properties of hardened concrete 硬化混凝土：hardened concrete ...
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研究了硬化混凝土性能指标与目前水泥性能指标的关系，结果表明，两者之间没有良好的相关关系。
After studying the hardened concrete properties index and cement properties index, and got that there were no significant relationship between them.
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