PP and PBT melt —blown nonwoven have been applied widely in blood filter but the filtering efficiency is low due to their poor hydrophilicity, then the modifications of nonwoven are necessary.
PP及PBT熔喷非织造布在血液过滤方面有广泛的应用，但其吸水性较差，从而影响了过滤效果。
But the intrinsic error exists in PP model for the effect of the data link layer and physical layer, and the incorrect result is obtained by filter algorithm when the network load is heavy.
由于受数据链路层和物理层的影响，PP测量模型本身存在着固有的测量误差；当网络负载较重时，PP测量模型就不能够通过过滤算法得出正确的测量结果。
At present, the main cigarette filtrational material is cellulose acetate tow and PP tow. The development of paper filter tip using sepiolite as cigarette filtrational material is discussed.
目前，卷烟滤嘴材料主要是醋酸纤维丝束和聚丙烯丝束。介绍了以海泡石为卷烟滤嘴材料的纸质滤嘴的开发前景。
Plastic housings (PP reinforced) with ecological round elements increasingly replace housings of sheet steel and filter elements with sheet steel end disks.
采用环保型圆型滤芯得塑料外壳（PP增强） 已在逐渐取代钢板外壳和钢板端盖的滤芯。
The influence of linear density uneveness of PP tow for cigarette on the filter tip quality was described. The influential factors upon linear density uneveness were analyzed.
阐述了聚丙烯烟用丝束线密度不匀率对过滤嘴质量的影响，分析了影响丝束线密度不匀率的因素。
The influence of linear density uneveness of PP tow for cigarette on the filter tip quality was described. The influential factors upon linear density uneveness were analyzed.
阐述了聚丙烯烟用丝束线密度不匀率对过滤嘴质量的影响，分析了影响丝束线密度不匀率的因素。
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