查询词典 atactic

The value of C_n was larger than that of isotactic PDEA and smaller than that of syndiotactic PDEA,which indicates that the PDEA synthesized by reversible addition-fragmentation chain transferpolymerization method was atactic chain.

其特征比的数值还表明PDEA链的柔性与聚相近。

The main results and conclusions are as follows:The trans-1,4 content of polybutadiene increased from 50%to 89%along with the increasing of Al/Li ratio;the trans-1,4 content of polyisoprene increased from 24%to 46%as well as 3,4 content along with the increasing of Al/Li ratio;the microstructure of polystyrene was invariable and atactic.

主要研究结果及结论如下：随着Al/Li的增加，聚丁二烯的反式结构含量从50%增加到89%；聚异戊二烯的反式-1，4-结构含量从24%增加到46%，并且其3，4结构含量也有所增加；聚苯乙烯的微观结构基本没有变化，为无规聚苯乙烯。

The main results and conclusions are as follows:The trans-1,4 content of polybutadiene increased from 50%to 89%along with the increasing of Al/Li ratio;the trans-1,4 content of polyisoprene increased from 24%to 46%as well as 3,4 content along with the increasing of Al/Li ratio;the microstructure of polystyrene was invariable and atactic.

加热器主要研究结果及结论如下：随着Al/L i的增加，聚丁二烯的反式结构含量从50%增加到89%；聚异戊二烯的反式-1，4-结构含量从24%增加到46%，并且其3，4结构含量也有所增加；聚苯乙烯的微观结构基本没有变化，为无规聚苯乙烯。

The binary composition contains atactic copolymer of styrene and vinyl cyanide in 50-95 wt% and thermoplastic polyurethane in 5-50 wt%.

本发明涉及一种含聚氨酯的热塑性二元组合物，该组合物含有50～95％的苯乙烯―丙烯腈的无规共聚物和5～50％的热塑性聚氨酯。

The effects of increasing the stereospecilicity is due to deactivation of different selectivity for both atactic and isotatic active centers and the deactivation of atacitic active centers is much greater than that of isotactic active centers.

EB、DIBP和TMP用作Din的效果则各不相同。烷氧基硅烷等Dex提高等规度的作用是由于它们选择性地使无规活性中心失活大大高于等规活性中心。

Polystyrene synthesized by Nd〓/MgBu〓·AlEt〓/HMPA is atactic, which is confirmed by its FT-IR and NMR spectra.

采用红外光谱和核磁共振谱表征了稀土催化合成的聚苯乙烯的立构规整性，表明为无规结构。

From the 13C NMR data, the degree of stereoregularity of the synthesized polystyrene could be moderately controlled by the chiral center in the oxazoline ring although atactic polymers were generally obtained by these Ni catalysts.

此外催化剂的立体结构以及反应条件对於聚合活性和聚合物性质的影响也将在本篇论文中探讨。

For example, there is only local cooperative organization between polymer segments of atactic poly in the middle-sized solvent poly with molecular weight 200g/mol (PEG200). But for the stereo-regular isotactic polystyrene, pronounced content of 3〓 helix can be found in its middle-sized solvents.

例如，无规聚甲基丙烯酸甲酯在聚乙二醇（分子量为400）中分子溶剂中表现为链段的局部协同组织，而等规聚苯乙烯在邻苯二甲酸二辛酯、氯代十四烷等中分子溶剂中则出现相当含量的3〓螺旋构象。

The experimental results show that the mean particle size of griseofulvin precipitated by RESS is smaller than 1, 0μm, narrow distribution and 95％ fine particles is smaller than 1. 0μm. Increase of the pre-expansion pressure, the extraction temperature, the expansion chamber temperature, the spraying distance, the concentration of cosolvent and decrease of the nozzle diameter resulted in decrease of the particle size under the operating condition studied. Enhancement of the pre-expansion temperature resulted in increase of the particles size. The SEM of GF shows that the shape of original is atactic and a wide size distribution, but the microparticles obtained by RESS is reverse. Similar melting points and XRD patterns were observed for the original material and the precipitates obtained by RESS.

实验结果表明，用含夹带剂的RESS法制备的灰黄霉素微粒的平均直径在1μm左右，且分布均匀，95％微粒在1μm以下，仅用CO〓作为超临界流体制备的微粒与上述方法制备的微粒的平均直径和分布相似，只是产量太低，而用机械法制备的微粒平均直径在3μm左右且分布较宽；不同的过程参数对沉析微粒尺寸有不同的影响，预膨胀压力、膨胀室温度、溶解温度以及夹带剂浓度的提高或增大，均可使沉析微粒的直径变小；预膨胀温度提高，所得微粒的直径变大；喷射距离的增加，沉析微粒的直径变小；喷嘴直径越小，由此制得的微粒的直径就越小；根据实验结果还可知道，通过理论计算的马赫盘处微粒的直径可以较好地估计出膨胀室中收集到的微粒的直径。

Units 1 new two-color jacquard machine and a production Atactic Taiwan brushed machine, can produce high-cashmere car blanket, low-cashmere blanket and a variety of cars Flower Carpet.

新上一台双色提花机及一台台湾产无规拉绒机，可生产高绒车毯、低绒车毯及多种花型地毯。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。