二二二

The synthesis methods of dibutyl succinate catalyzed by p-toluene sulfonic acid, amino sulfonic acid,strongly acidic cationic exchange resin, ferric chloride hexahydrate, stannic chloride pentahydrate, copper sulfate , ammonium ferric sulfate dodecahydrate, titanium sulfate, sodium bisulfate monohydrate,and solid super acid et al were reviewed.

本文评述了对甲苯磺酸、氨基磺酸、强酸性阳离子交换树脂、六水三氯化铁、五水四氯化锡、十二水合硫酸铁铵、硫酸钛、一水硫酸氢钠和固体超强酸等催化剂催化合成丁二酸二丁酯的方法。

I am twenty-two blocks from where Rudolph Valentino lay in state,eight blocks from where Nathan Hale was executed,five blocks from the publisher's office where Ernest Hemingway hit Max Eastman on the nose, four miles from where Walt Whitman sat sweating out editorials for the Brooklyn Eagle , thirty-four blocks from the street Willa Cather lived in when she came to New York to write books about Nebraska, one block from where Marceline used to clown on the boards of the Hippodrome, thirty-six blocks from the spot where the historian Joe Gould kicked a radio to pieces in full view of the public, thirteen blocks from where Harry Thaw shot Stanford White, five blocks from where I used to usher at the Metropolitan Opera and only 112 blocks from the spot where Clarence Day the elder was washed of his sins in the Church of the Epiphany (I could continue this list indefinitely); and for that matter I am probably occupying the very room that any number of exalted and somewise memorable characters sat in, some of them on hot, breathless afternoons, lonely and private and full of their own sense of emanations from without..

二十二个街区远的地方，鲁道夫·瓦伦蒂诺在安眠；八个街区远的地方，内森·黑尔被绞死；五个街区远的地方，是出版人办公室，欧内斯特·海明威在那里挥拳击中了马克斯·伊斯门的鼻子；四英里远的地方，沃尔特。惠特曼曾挥汗如雨为《布鲁克林之鹰》写社论；三十四个街区以外，是威拉。卡瑟初到纽约的旧居，她当时正准备写作有关内布拉斯加州的著作；一个街区远的街道，马士莱在竞技场舞台上扮演过小丑；三十六个街区以外，历史学家乔。古尔德在众目睽睽之下踢碎了一台收音机；十三个街区以外，哈里。肖拔枪射击斯坦福。怀特；五个街区以外，是我过去做带位员的大都市剧场；而距离老克拉伦斯。戴举行葬礼的主显节教堂，仅有一百一十二个街区（我不确定还能再想起点儿什么）。就此而言，我正置身其中的房间，或许曾经呆过一些高贵而令人难忘的大人物，他们中一些人，在闷热的下午，坐在这里，孤独而隐秘，发散出异于外界的特有气息。

I am twenty-two blocks from where Rudolph Valentino lay in state, eight blocks from where Nathan Hale was executed, five blocks from the publisher's office where Ernest Hemingway hit Max Eastman on the nose, four miles from where Walt Whitman sat sweating out editorials for the Brooklyn Eagle, thirty-four blocks from the street Willa Cather lived in when she came to New York to write books about Nebraska, one block from where Marceline used to clown on the boards of the Hippodrome, thirty-six blocks from the spot where the historian Joe Gould kicked a radio to pieces in full view of the public, thirteen blocks from where Harry Thaw shot Stanford White, five blocks from where I used to usher at the Metropolitan Opera and only 112 blocks from the spot where Clarence Day the elder was washed of his sins in the Church of the Epiphany (I could continue this list indefinitely); and for that matter I am probably occupying the very room that any number of exalted and somewise memorable characters sat in, some of them on hot, breathless afternoons, lonely and private and full of their own sense of emanations from without..

二十二条街外，鲁道夫·瓦伦蒂诺的遗体曾供人吊唁；八条街外，内森·海尔被处决；五条街外的出版社办公室里，欧内斯特·海明威一拳打中马科斯·伊斯特曼的鼻子；四英里外沃尔特·惠特曼曾汗流浃背地为《布鲁克林鹰报》社论主笔；三十四条街外是威拉·卡瑟在纽约写内布拉斯加故事时的住所；一条街外的西波佐恩剧院台，西班牙小丑玛瑟林上台演出，三十六条街外，历史学家乔·古尔德当众将一台收音机踢得粉碎；十三条街外，哈利·绍枪杀斯坦福·怀特；五条街外的大都会歌剧院我当过引座员；一百一十二条街外，老克拉伦斯·岱于主显节教堂洗净了罪孽（这个单子可以无穷无尽地列下去）；而且说起来，我呆着的这个房间，或许就有不少尊贵的、各有其难忘之处的人物坐过，也曾有人在热得喘不过气来的下午，寂寞而私密，满心感受着外来之力。

Based on the absorption property of glyoxime which can be formed by addition reaction of aldehyde group and hydroxylamine in the UV-spectral region,spectrophotometric determination of glyoxal in glyoxal solution was proposed.

利用醛基与羟胺在酸性条件下的成肟反应产物乙二醛二肟对紫外光的吸收特性，用紫外分光光度法测定乙二醛的含量。

The synthesis path of 2-phosphono-butane-1,2,4-tricarboxylic acid is studied by using alkyl phosphate,butendioic acid dialklesters and methyl acrylate with the catalyst of sodium methylate.

论文摘要本文以亚磷酸二甲酯，顺丁烯二酸二甲酯，丙烯酸甲酯为原料，甲醇钠为催化剂，合成了 2-膦酸丁烷-1，2，4-三羧酸并对中间物及产物进行了 IR、13C，31P 核磁，MS 表征。

Organic substances (diethylene glycol, glycol methyl ether and methyl ethyl ketone) were used as nonsolvent additives and N-methyl-2-pyrrolidone used as a solvent in membrane preparation. The effects of PPESK concentration, the type of additives and the NSA concentration in casting solution on the morphology and performance of the PPESK hollow fiber ultrafiltration membrane were systematically investigated.

以PPESK为膜材料，NMP为溶剂，水为凝胶剂，选用乙二醇甲醚、一缩二乙二醇和丁酮为非溶剂添加剂，系统研究了聚合物浓度、添加剂种类和含量对PPESK中空纤维超滤膜结构和性能的影响，制备了一系列具有不同孔径和通量的中空纤维超滤膜。

The phase separation behavior of different nonsolvent additives (methyl ethyl ketone, glycol methyl ether and diethylene glycol) on PPESK casting solution was studied at 20℃according the linerized cloud point correlation.

结合线性浊点关系，根据浊点滴定试验，通过三元相图研究了20℃下非溶剂添加剂(丁酮，乙二醇甲醚，一缩二乙二醇)对PPESK铸膜液体系的相分离行为。

An Effective way to Promote Quality of NPG ;2. The effects of the content of the third monomer NPG on the T_g, melting behavior and heat shrinkability of PET were studied, and the effect of drawing technology on the shrinkage of the film was also studied.

运用自制的反应装置，通过加入第三单体的方法对聚对苯二甲酸二醇酯进行了共聚改性，研究了第三单体新戊二醇用量对PET玻璃化转变温度Tg、结晶熔融行为和热收缩性能的影响，同时对拉伸工艺对薄膜收缩率的影响也进行了研究。

Copolymerization modification of PET was made by means of adding a third monomer on a homemade facility. The effects of the content of the third monomer NPG on the T, melting behavior and heat shrinkability of PET were studied, and the effect of drawing technology on the shrinkage of the film was also studied.

运用自制的反应装置，通过加入第三单体的方法对聚对苯二甲酸二醇酯进行了共聚改性，研究了第三单体新戊二醇用量对PET玻璃化转变温度T、结晶熔融行为和热收缩性能的影响，同时对拉伸工艺对薄膜收缩率的影响也进行了研究。

Copolymerization modification of PET was made by means of adding a third monomer on a home-made facility. The effects of the content of the third monomer NPG on the T_g, melting behavior and heat shrinkability of PET were studied, and the effect of drawing technology on the shrinkage of the film was also studied.

运用自制的反应装置，通过加入第三单体的方法对聚对苯二甲酸二醇酯进行了共聚改性，研究了第三单体新戊二醇用量对PET玻璃化转变温度Tg、结晶熔融行为和热收缩性能的影响，同时对拉伸工艺对薄膜收缩率的影响也进行了研究。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。