In this experiment, the abrasion resistance of concrete mixed with expansive compound mineral admixture is studied.
试验研究了添加膨胀组分的复合矿物掺合料的混凝土耐磨性能。
2
Through field experiment, field demonstration and chemical analysis, we sifted out the fertilizer No. 4 to be the best compound fertilizer specially used for sunflower.
通过田间试验、田间示范和室内分析，筛选出4号肥为向日葵专用肥的最佳配方。
3
Experiment results showed that compound use of efficient water-reducing admixture and retarding agent can efficiently control the pumped concrete slump loses through time.