以下为句子列表：
英文: A description is given of the analytical method for the determination of the urea content in slow-release urea by the p-dimethyl aminobenzaldehyde spectrophotometry.
中文: 摘要介绍用对二甲氨基苯节醛分光光度法测定缓释尿素中尿素含量的分析方法。
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英文: A new simplified analytical method was developed for analysis of interactions on the soil, the foundation and the superstructure of a super tall building with a space mega frame.
中文: 摘要对软土地基上的超高层建筑空间巨型框架提出了一种新的简化分析方法。
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英文: A quantitative analytical method for 4.5% beta-cypermethrin EC by GC was introduced, Dicyclohexyl-o-phthalate was selected as the internal standard.
中文: 摘要本文介绍了以邻苯二甲酸二环已脂为内标物，对4.5%高效氯氰菊脂乳油进行有效成份测定的气相色谱分析法。
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英文: A quantitative analytical method of 5% diethylmethylbenzamide in drive-worms floral-water by GC was introduced, Dibutyl Phthalate was selected as internal standard.
中文: 摘要本文介绍了以邻苯二甲酸二丁脂为内标物，对5%避蚊胺驱虫花露水进行有效成份测定的气相色谱分析法。
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英文: Abstract: A semi-analytical method is used to modelling the pract ical 3-zone simulated moving bed chromatography(SMBC) process for optimal searc hing.The switch time which is the most important operation parameter of 3-zone SMBC is analyzed based on the
中文: 文摘:针对三带模拟移动床色谱的实际模型，用一种融合了前馈与反馈的半解析优化计算方法对三带模拟移动床色谱过程进行了模拟.首先，由非线性单柱色谱理论解析地给出一个三带模拟移动床色谱的主要操作参数即切换时间值，然后利用所得结果与目标量之间的偏差来校正切换时间，在理论指导下进行优化搜索，切换时间能很快达到最佳值.将测得的系统参数引入计算，并将计算结果用于实际操作，得到了很好的分离效果.
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