The paper has discussed the method of synthesis of cationic-type polyacrylamide and it's application as flocculant, retention aid, drainage aid and strength aid.
本文介绍了阳离子型聚丙烯酰胺的制备方法及其在造纸工业中作为助留助滤剂、增强剂、絮凝剂的作用机理和应用条件。
Reducing the size of patios or other paved surfaces will also aid internal drainage.
减少了院子或其他铺设路面也将有助于内部排水的大小。
So need to learn how to marketing, to assist in the aid of software, so as to achieve the best effect of drainage.
所以要先学会如何营销，在借助软件去辅助，这样才能达到最佳的引流效果。
Many filtration belts have guides on the bottom of the belt to keep the drainage holes centered over the vacuum Chambers or to aid in tracking.
很多带式过滤器在带子底部划有指引线，用以保证排水孔中心在真空室中病辅助跟踪。
These conclusions aid to measure drainage rate of gas and fixing on maintenance period of coal laneway.
这些结论对于检测煤层瓦斯抽放率以及合理确定煤巷的维护周期具有重要的参考价值。
Punctal occlusion is a mechanical treatment in which the tear drainage system is blocked in order to aid in the preservation of natural tears on the ocular surface.
封闭泪点是一种机械性治疗，可以阻塞泪液排除系统，使得原有的泪液能保留在眼球表面。
A new thorax closed drainage device for the first aid is introduced in the paper. It may well replace the commercial thorax closed drainage-bottles now used in hospitals, which have many shortcomings.
介绍一种新型急救胸腔闭式引流装置，该装置能取代目前所使用的胸腔闭式引流瓶装置，克服了胸腔闭式引流瓶装置的诸多缺陷，适合急救时的复杂环境下使用。
A new thorax closed drainage device for the first aid is introduced in the paper. It may well replace the commercial thorax closed drainage-bottles now used in hospitals, which have many shortcomings.
介绍一种新型急救胸腔闭式引流装置，该装置能取代目前所使用的胸腔闭式引流瓶装置，克服了胸腔闭式引流瓶装置的诸多缺陷，适合急救时的复杂环境下使用。
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