Effects of sulfate concentration, water-binder ratio, mineral admixtures and chemical additives on the compressive strength of concrete were studied through the grey relational analysis.
采用灰色关联理论研究了硫酸盐浓度、水胶比、矿物掺合料及外加剂等因素对混凝土抗压强度的影响。
Due to the limitation of the grey system GM (1, 1) model in predicting the principal objective developing mineral resources, this paper puts forward for the improved GM (1, 1) model.
然后针对GM(1,1)预测模型在矿产资源开发总体目标预测应用中的局限性，提出了改进的滑动等维灰数递补预测模型。
The two facade's matters complete each other harmoniously: charcoal grey and gold, absorbent and reflective surfaces, mineral porosity and metallic brightness.
立面的两种材料互相补充和完善：炭灰色和金色、吸光表面和反光表面、矿物材料的多孔性和金属的明亮质感。
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