PAHO and US CDC experts are working together on improved surveillance and reporting of cases, analysis of water samples from rivers and other water sources, and monitoring of antibiotic resistance.
泛美卫生组织和美国疾病预防控制中心的专家共同致力于改进病例监测和报告，分析从河流和其他水源得到的水样，并监测抗生素耐药性。
To provide a polychloroprene-base latex having improved adhesiveness and water resistance over conventional polychloroprene-base latex adhesives.
为了提供相对常规聚氯丁二烯基胶乳胶粘剂具有改进的粘着性和耐水 性的聚氯丁二烯基胶乳。
It also found strong environmental benefits such as improved soil fertility, better retention of water and resistance to drought.
研究还发现，有机农业还能带来极大的环境效益，比如提高土壤的肥力、更好地保持水土、防止干旱。
The gloss, hardness and water-resistance of the latex coatings can be improved by incorporating the hydrosols.
添加该水溶胶可改善氨基丙烯酸乳胶漆的光泽、耐水性和硬度。
The water-resistance and strength of stucco gypsum can be improved remarkablely by adding proper quantity self-made inorganic composite glue congeal materials.
粉刷石膏中掺入适量的自制无机复合胶凝材料，可显著提高石膏的耐水性和强度。
The water resistance of modified polyurethane was remarkably improved, with its water absorption rate less than 3%.
改性后的聚氨酯其耐水性得到明显提高，吸水率降至3％以下。
The mechanical properties and the resistance to water and heat of the polymer modified cement based waterproofing coating are greatly improved by the synthesized melamine resin.
三聚氰胺甲醛树脂交联剂可明显改善聚合物水泥基涂料的力学性能、耐热性能和耐水性能。
Using silane coupling agent to copolymer with vinyl acetate, the water resistance of the polyvinyl acetate emulsion is improved, and the compress strength is praised.
为改善聚醋酸乙烯乳液耐水性差的缺点，用硅烷偶联剂对其进行了改性，使其压缩剪切强度的干强度和湿强度均有显著的提高。
It was found to be greatly improved in response time and water vapor-resistance.
据观察，其响应时间以及抗水湿性能都有了提高。
The water-resistance agent with melamine and un-improved glyoxal as matrices has negative effects on the paper quality because of the polymerization potential of its own.
以三聚氰胺及未改进的乙二醛为基质的抗水剂，因本身会发生聚合反应，会造成纸张质量的负面影响。
The copolymerization of vinyl acetate(VAc) and 2-hydroxy ethyl acrylate(HEA) was carried out. The copolymerization improved the water-resistance and bonding performances of vinyl-acetate adhesive.
研究了醋酸乙烯酯与丙烯酸2 羟基乙酯共聚的合成路线，通过乳液聚合所制得的共聚产物可有效地改善聚醋酸乙烯酯的耐水性能与粘接性能；
The optimum processing has been investigated and under the optimum processing the fabric's water repellency, oil repellency and stain resistance were improved.
得到了提高羽绒服涤纶面料的拒水、拒油、防污的三防整理优化工艺条件。
The soap fiber of the said grease is similar to that of the compounded lithium base grease, the former is cheaper and its water resistance and anti wear properties are improved.
复合锂-钙基脂的皂纤维与复合锂基脂的类似，但产品的成本有所降低，产品的抗水性和抗磨性有所提高。
The results indicated that the water resistance and the adhesion power of the film were improved obviously by the polymerization of emulsifier-minor emulsion.
实验结果表明，采用微皂乳液聚合明显地改善了涂膜的耐水性和附着力。
It has good acid and alkali resistance and hot water washing resistance. Part of the physics mechanical properties are therefore improved.
经甲醇处理后，具有良好的耐热水洗涤性、耐酸碱性，部分物理机械性能有所改善。
The wettability by water and oxidation resistance of the coated graphite powders were greatly improved and the electro-kinetic behavior of the coated graphite powders was similar to that of Al2O3.
氧化铝包覆石墨复合粉体与水具有良好的润湿性，其表面特性与氧化铝相似，并且抗氧化性能得到较大的改善。
The results showed that bonding strength and water resistance of the modified adhesive have improved obviously.
实验结果表明，改性胶粘剂的耐水性和粘接强度较普通的聚醋酸乙烯乳液有明显提高。
After water insoluble agents are added, the water resistance can be enhanced and the flexibility and the stretchability of the product can be improved.
加入水不溶剂后，可增强耐水性，提高制品的柔韧性、可拉伸性。
After water insoluble agents are added, the water resistance can be enhanced and the flexibility and the stretchability of the product can be improved.
加入水不溶剂后，可增强耐水性，提高制品的柔韧性、可拉伸性。
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