In the paper, the effects of the ion type of polyacrylamide on retention of fines in the corrugated medium paper and the properties of the paper were studied.
研究了不同离子类型的几种聚丙烯酰胺对瓦楞原纸中细小组分的留着作用以及其对纸张性能的影响。
When information was recorded on a tangible medium-paper, film and so on-everything had only one correct place.
信息被记录在纸张、胶片等有形介质上的话——所有信息各得其所。
When information was recorded on a tangible medium-paper, film and so on-everything had only one correct place.
信息被记录在纸张、胶片等有形介质上的话——所有信息各得其所。
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