The Effects of time factors on the compacting process of foundry sands were seldom mentioned and reported.
型砂紧实过程中的时间因素的影响，以前很少有人研究过。
Analysis and comparing showed that vertical waste compacting process has more advantages in respects of technology and operation cost than other processes.
通过分析比较，认为竖直式垃圾压缩工艺在工艺技术上和运行费用上，较其它工艺具有一定优势。
The stress and strain of forming powder of wall ground tile in compacting process are analysed in this paper and several rheological models of forming powder are put forward.
对墙地砖成型粉体在压制过程中的应力与应变进行了分析并且提出了几种成型粉体的流变模型。
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