聚合的

Methacrylic acid-acraldehyde/ montmorillonite nanocomposites were prepared using Na+- montmorillonite via in-situ polymerization of methacrylic acid and acraldehyde in aqueous medium.

采用水溶性聚合单体甲基丙烯酸和丙烯醛在钠基蒙脱土层间直接原位插层聚合制备水溶性MAA-AL/MMT纳米复合材料，通过XRD和TEM对纳米复合材料的结构进行表征，采用TGA、DSC研究了纳米复合材料的热性能，同时考察了甲基丙烯酸与丙烯醛配比及体系pH值对纳米复合材料结构及应用性能的影响。

Based on the research of commercial PAC made by different technologies,it is found that poly—aluminum chloride containing more high molecular weight plays a more important role in coagulation.

通过对不同生产工艺得到的商品聚合氯化铝进行聚合物种类的研究，并结合混凝实验，发现高分子聚合氯化铝对混凝效果发挥了更大的作用。

Nucleolus 核仁 28s, 18s, 5.8s rrna: these are structural and functional components of the ribosome, which functions during translation. it is relatively insensitive to inhibition by -amanitin.

rna聚合酶ⅰ催化合成 rrna(5.8s、18s和28s rrna)的前体，5.8s、18s和28s rrna 是具有翻译功能的核糖体的结构和功能成分。rna聚合酶ⅰ对α-鹅膏蕈碱不敏感。

In order to decrease copolymerization loss of isoprene during thermal dimerization of cyclopentadiene in C5-fraction,the effect of three inhibitors,diethylhydroxylamine,p-tert-butylcatechol and o-nitrophenol,on dienes' polymerization in the process was investigated by experiment with sealed glasstube.

为减少C5馏分环戊二烯热二聚过程中异戊二烯的聚合损失，采用封管实验方法考察了添加阻聚剂二乙基羟胺、对叔丁基邻苯二酚、邻硝基苯酚对热二聚过程中各二烯烃组分聚合程度的影响。

For (NH4)2S2O8 initiated ISP system consisted of AA, SPAN emulsifier and kerosine, it was found Rp 1.10.8, Eap=78.8kJ/mol for acrylic acid system and Rp 1.50.6, Eap=57.8-83.7kJ/mol for ammonium acrylate system The value of was negative when , the emulsifier concentration ,was low and became positive when was high for both systems.

用过硫酸铵引发AA类单体、SPAN系列乳化剂及煤油体系的ISP时，对AA体系Rp∝~(1.1)~(0.8)~Y，聚合总活化能为78.8KJ／mol；对丙烯酸铵体系，Rp∝~(1.4)~(0.6)~Y，聚合总活化能为57.6～83.7 kJ／mol，两体系中的γ值在乳化剂浓度较小时为负值，增加到一定程度时为正值。

The mechanism of the self-stability of polymer particles during the polymerization in the absence of surfactants was studied.

丙烯酸是一种活性很高的单体，由于其功能基团的存在，无法进行离子聚合，仅能用自由基方法聚合。

Therefore, due to their pharmaceutical and agrochemical importance, the research on agaro-oligosaccharides will be of potential value for the development of drugs and functional ingredient.

为了阐明寡糖聚合度与活性之间的关系，首先对琼胶进行降解，并利用凝胶层析柱分离出聚合度在2到10的各种纯寡糖。

The monomer conversion efficiency and average particle size and its distribution of vinyl acetate polymerization by conventional and ultrasonic-assisted means individually were compared.

对比了醋酸乙烯在传统聚合中和超声波辅助聚合中的单体转化率和乳液粒径分布的差别。

Each of the three RNA polymerases contains 12 or more subunits, some of which are similar to those of E. coli RNA polymerase.

原来译文：三种RNA聚合酶的每一种含有12个或更多亚基，其中有些亚基和大肠杆菌RNA聚合酶中的相似。

In particular, the present invention concerns a process and an apparatus for continuous polymerisation olefin monomers like ethylene and other monomers, wherein an olefin monomer is polymerised in slurry phase in an inert hydrocarbon diluent in at least one loop reactor.

本发明尤其涉及连续聚合烯烃单体如乙烯和其它单体的方法和设备，其中烯烃单体在至少一个回路反应器内惰性烃稀释剂中的浆料相内聚合。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐