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将不同掺量的聚丙烯纤维、矿渣、聚羧酸系超塑化剂掺入混凝土中,在测试和分析超声波脉冲速率的基础上,假设混凝土是由空白混凝土、聚......
Based on the theory of the pulsed photoacoustic signal in liquid generated by a pulsed laser, a novel, optically noncont......