seacoal

常见例句

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...
用單純形重心設計,優選出了這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展