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。
This is the center circle of the pattern.
这是图案的中心圈。
The center says the pattern should begin to weaken in a week or two.
该中心说这一走势应该会在一两周后开始减弱。
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