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The route include three steps: etherification, ammoniation and then oxidation. Factors such as chloracetate, reaction temperature on process were studied. And discussed the ionic liquid was recovered.

讨论了不同的氯乙酸酯和反应温度对醚化反应收率的影响，讨论了不同的二苯甲硫乙酸酯对氨解反应收率的影响，及离子液体的回收使用。

METHODS:This compound was synthesize by steps of ammonolysis,hydrogenize,diazotization and coupling from 4-nitrobenzoyl chloride.

以对-硝基苯甲酰氯为原料，经氨解、氢化、重氮化及偶合四步反应得到了巴柳氮。

The polymethyl methacrylate material with super-hydrophobic surface of the invention is prepared in the following steps: 1 the polymethyl methacrylate material is first put into diamine solution, so that the ester group on the surface of the material has ammonolysis reaction with diamine molecules; 2 and then, the product of the step 1 is put into long chain fatty acid solution to be treated and the solvent is volatilized, so as to obtain the polymethyl methacrylate material with super-hydrophobic surface.

本发明具有超疏水表面的聚甲基丙烯酸甲酯材料，是按照如下步骤进行制备的：1将聚丙烯酸甲酯材料先置于二胺溶液中使聚丙烯酸甲酯材料表面的酯基与二胺分子发生氨解反应；2然后，将其置于长链脂肪酸溶液中进行处理，挥发掉溶剂，得到具有超疏水表面的聚甲基丙烯酸甲酯材料。

A novel synthetic approach of 3,3'-azobis(6-amino-1,2,4,5-tetrazine) was firstly devised. Taking 3,6-bis(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine as a primary material, DAAT was synthesized by high pressure ammonolysis and potassium permanganate oxidation. Compared with the four-step reaction in the literature, this new approach was reduced to two steps with a yield of 58.1%. The intermediate and DAAT were characterized by elemental analysis, IR and NMR spectra.

自行设计了3，3'-偶氮双(6-氨基-1，2，4，5-四嗪)新合成路线、采用3，5-双(3，5-二甲基吡唑-1-基)-1，2，4，5-四嗪为原料，由文献报道的4步反应缩减为2步，经高压氨解、高锰酸钾氧化合成了DAAT，总收率大幅提高，达到58.1%，并采用元素分析、红外光谱、核磁共振光谱等进行了结构表征。

Dimethylhexane-1,6-dimethyleurethane is the key material for preparation of 1,6-hexamethylene diisocyanate by non-phosgene route. Our work mainly focuses on the study of the catalytic performances of metal oxysalts and metal oxides for the ammonolysis of DMC to HDU-M. Experiment effect showed the ammonolysis was omposed by two steps, in which the first step was easier to occur than the second.

中文摘要六亚甲基-1，6-二氨基甲酸甲酯是非光气合成六亚甲基二异氰酸酯的关键原料，本文主要对金属含氧酸盐和金属氧化物这两类用于碳酸二甲酯胺解合成HDU-M 的催化剂进行了初步研究并优化了工艺条件。

One of a series of steps or tiered seats, as in an amphitheater.

阶梯式座位，阶梯一系列台阶中的一级或阶梯式坐位的一排，如在圆形剧场中的

The algorithm included three steps: Firstly, the text subregion was selected adaptively according to the feature that the edges contained in text regions was stronger than those in nontext regions; Secondly, the blank bars between two text lines were extracted by blank blocks searching; Thirdly, the skew angle of blank bar was calculated by directional fitting, and this skew angle was just the document skew angle.

该方法首先通过对梯度图像的统计分析，自适应地选取到了包含文字的特征子区；在特征子区内，论文把文字行间的空白条带看作一条隐含的线，用优化理论计算出空白条带的倾斜角度，这也就是文本的倾斜角度。

I must admit I cheated a little to get this image, and I changed both the angle of the twist and the number of steps the effect was repeated.

我必须承认我为了得到这形象有点欺骗，并且我改变了扭曲的角度和数字跨效果重复了。

The integral area for calculating the beam width by using the definition of generalized second-order moments is selected to ensure the energy in the angular domain more than 75% of the total beam energy and the measurement method and steps still follow the relevant ISO standards. The generalized M2 factor of truncated Gaussian beam has been measured. The experimental results for different truncated parameters have been compared with the theoretical results, showing the validness of the method proposed.

在利用广义强度二阶矩计算光束束宽时，以积分角谱范围能够包含光束总能量的75%以上作为积分范围的选取标准，并遵循现有的国际标准化组织规定的测量步骤和方法对截断高斯光束的广义M2因子进行了测量，并将不同截断参量时的实验结果与理论计算结果进行了比较，证明了该方法的正确性。

With these simple steps a leather anklet with be a joy to wear for a long time.

有了这些皮脚链简单的步骤是一件乐事穿很长一段时间。

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。