By means of single pattern center design 3 steps for optimized match project.According this the 3R powder substituted for seacoal was made.It not only had the effect of pre...

• 用单纯形重心设计,优选出了这3种材料的合适搭配方案,制成了既具有防粘砂效果又具有抗夹砂能力的煤粉代用材料3R粉。