常見例句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... 用單純形重心設(shè)計,優(yōu)選出了這3種材料的郃適搭配方案,制成了既具有防粘砂傚果又具有抗夾砂能力的煤粉代用材料3R粉。Keywords compound carbon powder;mould sand;seacoal; 複郃碳粉;型砂;煤粉;Mechanism of seacoal in greensand and development history of placement addition of seacoal 煤粉防粘砂機理及煤粉代用品的發(fā)展 返回 seacoal