countercurrent leaching

Rational ore matching ensuring ore removal grade stability;

合理配矿是确保出窿品位稳定的有效途径

The structure,character and applications of POLYFLOW inverse extrusion in the design of polymer processing were introduced in detail.

介绍了POLYFLOW模拟软件的结构、特点及其在聚合物加工过程中的应用,以工字型木塑异型材挤出口模设计为例,建立了数学模型、几何模型及有限元模型,并进行了数值模拟和分析,详细论述了如何有效应用POLYFLOW逆向挤出功能对木塑复合异型材挤出口模进行设计。