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介绍了聚氨酯筛板的孔形设计及现场使用情况，试验证明了这种筛板孔形对提高筛分效率、延长筛板寿命是十分理想的。
The hole shape design and field use of polyurethane sieve are introduced. It is proved that this sieve hole shape can improve the screening efficiency and extend the life of sieve plate.