二-十进制

Diethylene glycol dibenzoate octyl is the latest developed high-performance PVC plasticizers, can effectively substitute for DOP ester, dibutyl.

二甘醇二苯甲酸辛酯是最新研制出的PVC高效增塑剂，能够有效替代邻苯二甲酸二辛酯、二丁酯。

Macrocycle with one pyridyl unit and one aryl oxdiazole unitCondensation of Ts-amino acids with 2,6-bishydroxymethyl pyridinegave di-esters in the presence of DCC and TsOH in pyridine. DMAP,another acylation catalyst was also discussed in our esterification.

二。含一个吡啶环和一个二苯基噁二唑单元：直接采用Ts保护的氨基酸与吡啶二醇在吡啶-TsOH反应体系中，在DCC作用下生成吡啶二醇二酯，讨论了酯化过程中不同酰基化试剂的应用。

A series of novel polys: poly, poly and their copolymer poly were synthesized at high temperature by nucleophilic polycondensation of bisphenol 4 (3 phenyl 4 hydroxyphenyl) 2,3 phthalazin 1 one with activated difluorodiphenylketone, dichlorodiphenylsulfone and both together.

将苯基取代类双酚化合物 4-(3 -苯基-4-羟基苯基)-2 ，3 -二氮杂萘-1 -酮与活性双卤单体如 4，4 -二氟二苯酮、4，4 -二氯二苯砜进行高温缩聚反应，合成了高分子量的新型苯基取代杂萘联苯型聚芳醚材料；用1 H NMR、FT-IR表征了类双酚单体及聚合物的结构。

Control of QR barnyardgrass was also studied in this paper. Butachlor, cyhalofop-butyl, oxyfluorfen, pretilachlor, mefenacet and oxyfluorfen plus quinclorac gave adequate control of QR barnyardgrass, however, butachlor in combination with quinclorac and quinclorac plus piperonyl butoxide or agrco were not effective for control of QS barnyardgrass.

本论文还对QR稗草的治理进行了研究，结果表明：丁草胺、千金、果尔、扫茀特、苯噻草胺单剂及果尔和二氯喹啉酸混用能有效的防治二氯喹啉酸抗性稗草，而丁草胺和二氯喹啉酸混用、二氯喹啉酸和增效醚及二氯喹啉酸和表面活性剂蜡混用不能有效的防治QR稗草。

In this paper, 4-4-(trifluoromethoxy benzoyl cyclohexyl-3, 5-diaminobenzoate with a large branch chain, pyromellitic dianhydride and 4-(4-aminobenzyl) benzenamine were used to synthesize polyimides. The effect of monomer charge order on pretilt angle was investigated for the first time when PIs were used as LC alignment layer, and the effect of diamine mole ratio on pretilt angle was studied. The thermal stability of the pretilt angle was discussed.

文章用均苯四酸二酐、4，4'-二胺基二苯甲烷和具有较大支链的4-（4-苯甲酰基）环己基－3，5-二胺基苯甲酸酯等单体制备聚酰亚胺，首次研究了单体加料顺序对液晶预倾角的影响，同时也研究了二胺配比对液晶预倾角的影响问题，并探讨了预倾角的热稳定性等问题。

The regurgitant volume was calculated by temporally integrating the instantaneous flow volume rate of each frame during systole.

建立了基于经食道旋转扫描二维和经胸实时三维超声多普勒血流图像获取方法和图像插值、配准算法获得体数据，经多维重建描述二尖瓣反流速度的空间分布，立体观察返流的时相、方向、反流束长度、面积、体积、空间传播和严重程度等；通过重建反流后的速度场，从血流动力学角度分析了二尖瓣反流的性质，计算偏心反流束的湍流强度，利用反流束角度和湍流强度对计算结果进行修正；基于实时三维彩色多普勒成像技术，利用控制体原理对二尖瓣反流束在反流瓣口横断面的速度分布进行空间与时间积分获得二尖瓣偏心性反流的每搏反流量。

The OH-terminated linear aliphatic polyester polybutylene sebacate was synthesized by sebacic acid and butancdiol using solution polycondensation combined with melt polycondensation. The composition and construct characteristic of the product were analyzed by GPC, FT-IR and 1HNM.

以丁二酸和丁二醇为原料，采用溶液与熔融结合法合成了端羟基聚丁二酸丁二醇酯，用甲苯-2，4-二异氰酸酯对PBS封端，合成了线性遥爪型纸张增强剂TDI-PBS。

Intermidiate 1, 2-propanediol-sebacate was synthesized with 1, 2-propanediol and sebacic acid, then a novel degradable elastomer, poly, was synthesized by melt phase polycondensation of 1, 2-propanediol-sebacate and citric acid under under certain conditions.

通过癸二酸与1，2-丙二醇反应，生成中间体癸二酸聚酯二元醇，然后将中间体与柠檬酸在一定条件下熔融缩聚制得了一种可降解弹性体聚癸二酸丙二醇柠檬酸酯。

Results Eleven compounds were obtained and identified as sarcodonin A, scabronine B, 3β-hydroxy-5α, 8a-epidioxyergosta-6, 22-dien,(22E, 24R)-ergosta-7, 22-diene-3β, 5α, 6β-triol,(22E, 24R)-ergosta-7, 22-diene-3β-ol, benzoic acid, 4-hydroxylben-zaldehyde, 4-monopropanoylbenzenediol, ethy1-β-D-glucopyranoside, thioacetic anhydride,(2S, 2'R, 3S, 4R)-2-(2-hydroxyoctadecanoylamino) docosane-1, 3, 4-triol.

结果共分离鉴定了11个化合物，分别是：sarcodonin A、scabronine B、3β羟－5α，5α-过氧麦角甾－6，22-二烯－3β-醇、(22E，24R)-麦角甾－7，22-二烯－3β，5α，6β三醇、(22E，24R)-麦角甾－7，22-二烯－3β-醇、苯甲酸、对羟基苯甲醛、对羟基苯甲酸乙酯、乙基－β-D-吡喃葡萄糖苷、硫代乙酸酐、（25，2'R，3S，4R）-2-（2-羟基－十八碳酰胺）二十二碳烷－l，3，4-三醇。

A series of modified polyurethane elastomer materials with different amino siloxane content were synthesized,which were based on polyoxypropylene glycol,aminoethyl aminopropyl poly,toluene diisocyanate and the curing agent dimethylsulfide toluylenediamine.

以聚氧化丙烯二醇或聚氧化丙烯三醇、氨乙基氨丙基聚二甲基硅氧烷、甲苯二异氰酸酯为原料在无溶剂条件下制备预聚体，利用二甲基硫甲苯二胺为固化剂合成一系列氨基硅油改性聚氨酯弹性体材料，并对材料的力学性能、耐热性、表面水接触角等性能进行了测试。

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。