己酸酯

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。

In this paper,pyromellitic dianhydride,1,2,3,4-cyclobutanetetracarboxylic dianhydride,4[(4-aminophenyl)-bis(4-methoxyphenyl)methyl]benzeneamine,4-hexyloxy-biphenyl-3′,5′-diaminobenzoate,and additive ADD-34 were used to synthesize four PIs.

文章用均苯四甲酸二酐，4[(4-氨基苯基)-二(4-甲氧基苯基)甲基]苯胺，1，2，3，4-环丁烷四羧酸二酐，4-己烷氧基联苯酚-3′，5′-二胺基苯甲酸酯和不同含量的添加剂制备了聚酰亚胺液晶取向剂。

Reverse micelles system was formed by sulphosuccinic acid his (2-ethylhexyl) ester sodium salt isooctane and KCl buffer solution.

采用由AOT（琥珀酸二（2-乙基己基）酯磺酸钠）－异辛烷－KCl缓冲液组成的反胶束体系，联合酶解技术提取脱脂小麦胚芽蛋白。

Changle Yili Chemical Co., Ltd. is a high-tech Private enterprise, which mainly produces fine chemical products. The main products are environmental solvent with high-boiling point-composite Dimethyl Blatomic Acid(Dubang company call the same kind product as DBE), DBE-IB, DMA, TEC.The company covers an area of 40 acres.

昌乐屹立化工有限公司是以生产精细化工产品为主的高科技民营企业，主导产品为环保型高沸点溶剂－混合型二元酸二甲酯（杜邦公司称同类产品为DBE），环保型高效成膜助剂，己二酸二甲酯柠檬酸三乙酯。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。