The model of a factor that fly ash effects on carbonation resistance was found, effect of fly ash on the air infiltration coefficient is analyzed.
建立了单一粉煤灰影响因子模型，分析了粉煤灰掺量对混凝土空气渗透系数的影响。
Compared with the traditional air purification filter core, the utility model has the advantages of appropriate wind-resistance coefficient, stable efficiency, light weight, low cost, and so on.
与传统的空气净化滤芯相比，本实用新型提供的滤芯具有合适的风阻系数及稳定的效能且质量小、成本低等优点。
Compared with the traditional air purification filter core, the utility model has the advantages of appropriate wind-resistance coefficient, stable efficiency, light weight, low cost, and so on.
与传统的空气净化滤芯相比，本实用新型提供的滤芯具有合适的风阻系数及稳定的效能且质量小、成本低等优点。
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