查询词典 quaternary

Quaternary ammonium compound category, chlorine dioxide, ethylene oxide, composite aldehydes, chelating agent, surfactant, the activity factor.

复合季铵盐类、二氧化氯、环氧乙烷、复合醛类、螯合剂、表面活性剂、活性因子。

Ethylene oxide, chlorine dioxide, composite aldehydes, quaternary ammonium salt-type compound, surfactant, activity factor, chelator.

环氧乙烷、二氧化氯、复合醛类、复合季铵盐类、表面活性剂、活性因子、螯合剂。

Ethylene oxide, chlorine dioxide, the compound aldehydes, quaternary ammonium compound category, surfactant, the activity factor, the chelating agent.

环氧乙烷、二氧化氯、复合醛类、复合季铵盐类、表面活性剂、活性因子、螯合剂。

The chloromethyl benzoate was first introduced as spacerarm between SW and BSA to synthesize SW quaternary ammonium salt compound , after every compounds were identified by poppen analysis, then to get SW-BSA by the methord of EDC.

引入对氯甲基苯甲酸作为SW与BSA之间偶联的间隔臂，通过化学合成的方法，先合成。。。

Optimum conditions are as follows: DMF is used as solvent, compound quaternary ammonium salt as catalyst, n(p-nitrochloro benzene):n=1: 1.2, m:m(p-nitrochloro benzene)=4%, m:m(p-nitrochloro benzene)1:1, and reacted under 155~160℃ for 18 h; reduction reaction is carried out in methanol with Raney nickel, which is used as catalyst; the raw product is added an antioxidant, and distilled simply under reduced pressure to obtain 4-fluoroaniline with excellence quality, purity is over 99.5%, total yield is 89.3%.

实验结果表明，氟化反应的最佳条件为：二甲基甲酰胺为溶剂、复合季铵盐为催化剂，n：n=1：1.2，m（催化剂：m=4%，m：m=1：1，于155~160℃下反应18h；还原反应在甲醇中进行，以阮内镍为催化剂；粗产品加入抗氧剂，减压条件下简单蒸馏得高品位的对氟苯胺。

Result A strain of Pseudomonas cepacia was detected in 1.6% compound quaternary ammonium disinfectant before application. The amount of the germ was 1.21×105cfu/ml. The strain had the similar resistance to chlorine-containing disinfectants and glutaraldehyde compared with Staphy aureus. The contaminated disinfectant could still thoroughly destroy the antigenicity of HBsAg with 60min's contact after diluted for 5-20 times.

结果 该洋葱假单胞菌对氯和戊二醛的抗力与大肠杆菌和金黄色葡萄球菌接近，污染样液除菌后1 000倍稀释对大肠杆菌和金黄色葡萄球菌仍有较好的杀菌效果，20倍稀释可完全破坏HBsAg抗原性，和抑制枯草杆菌黑色变种芽胞的生长，1 600倍稀释可抑制白色念珠菌生长，而原液则不能抑制分离菌株的生长。

During Middle-Pleistocene, the height of Qinghai-Xizang Plateau uplift to 3000m high. At the same time, Quaternary maximum glaciations and hypsithermal appeared. The effect of dynamic and thermodynamic of plateau strengthened further and the southwest monsoon became thicker. Southwest monsoon plays an important role in natural environment of China.

中更新世时，青藏高原隆升至海拔平均约3000m的高度，同时期也出现了第四纪最大冰期与最大温暖期，高原热力和动力作用得到了进一步加强，西南季风厚度加大，西南季风对中国自然地理环境深化起到重要作用。

After a study of macroscopic features for the Quaternary glacial vestiges in the Tanzhesi area of the Western Hills of Beijing,the analysis of the appearances and assemblage features of quartz grain surface textures has been carried out for the palaeoglacial deposits of the Guantuoling and Zhaojiatai glaciations.

以北京西山潭柘寺地区第四纪冰川遗迹的宏观特征研究为基础，对管坨岭水期和赵家台冰期的古冰川沉积进行了石英颗粒表面结构形貌组合特征的分析。

Quaternary period, the glacier coverage of the Wutai Mountain, has left a precious periglacial geomorphology.

第四纪时期，冰川覆盖了五台山，至今留下了弥足珍贵的冰缘地貌。

Quaternary period, the glaciers covering the Wutai Mountain, leaving behind a precious periglacial landforms.

第四纪时期，冰川覆盖了五台山，留下了弥足珍贵的冰缘地貌。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。