| 1. | Kodak company describe the use of a solvent-stabilizer system comprising a class of sterically hindered phenols acting both as coupler solvent and stabilizer .
柯达叙述了一类含有空间位阻酚类作为成色剂和稳定剂。 |
| 2. | Abstract : synthesis of sterically hindered dicyclohexylmethyl 、 l - menthyl and tert - butyl diazoacetate by diazo transfer was described on this paper
文摘:研究了用重氮转移法合成具有较大空间位阻的重氮乙酸二环己基甲酯、 l -薄荷酯和叔丁酯。 |
| 3. | The two peptides are connected with the three amino acid after the analysis of the software on the predication of the protein structure to avoid the interference hi the space
利用现有蛋白结构预测软件进行分析避免空间位阻，然后在两个小的肽链之间加上起连接作用的3个氨基酸。 |
| 4. | Moreover , template can be pre - designed according to the size and shape of objective materials . microgels are cross - linked latex particles with narrow size distribution and the inherent steric stability
微凝胶是一种交联型的胶乳粒子，它具有较窄的尺寸分布和空间位阻作用。 |
| 5. | They were used as efficient lewis acid catalysts for esterification reactions of carboxylic acids with alcohols to afford corresponding saturated esters with 87 % ~ 98 % yields and unsaturated and tertiary ones with 90 % ~ 94 % and 54 % ~ 68 % yields , respectively
结果表明，该有机锡化合物是合成酯的优良催化剂，产品收率高，饱和一元羧酸酯的收率为87 % ~ 98 % ，对不饱和羧酸酯和空间位阻大的叔醇酯也能得到较满意的收率，分别为90 % ~ 94 %和54 % ~ 68 % 。 |
| 6. | Because of the interaction of urushiol chains and cus , the transformation temperature tg of hybrid - epu / cus was higher than that of epu . heat stability and solvent resistance were also improved . the interaction and network of urushiol chains were efficiency to inhibit the dimension of cus nanoparticles
漆酚链段与cus之间的作用，以及漆酚交联网络的存在可有效阻止cus颗粒尺寸的增大，但漆酚交联网络产生的空间位阻也在一定程度上降低了sz ”的扩散。 |
| 7. | It influences the miaow thiazole quinoline to lose slowly that the experiment is drawn the pharmaceutical loses slowly the factor of performance has temperature mainly , density , the membrane time in advance , and design many group ' s simulation systems for different influence of these three factors , is it is it should lose pharmaceutical to lose pharmaceutical slowly one positive pole type , lose performance is it is it form space location hinder after the membrane to absorb to come from mainly slowly slowly to appear to prove , thus isolated the carbon steel base body and corrode the medium
实验得出影响咪唑啉缓蚀剂缓蚀性能的因素主要有温度，浓度，预膜时间，并针对这三个因素的不同影响设计了多组模拟体系，验证出该缓蚀剂是一种阳极型的缓蚀剂，缓蚀性能主要来自于吸附成膜后形成空间位阻，从而隔离了碳钢基体和腐蚀介质。 |
| 8. | Dense of structure and development of final properties were benefited from retardation of hydration . in contrast , cement hydration process was controlled better by polycarboxylate superplasticizer than the other three superplasticizers owing to its stereoscopic action . and its adaptability to cement was better , by which the cement particles were
相比之下,聚羧酸盐高效减水剂由于其良好的空间位阻效应,能够使水泥颗粒呈完全分散状态,与其他三种高效减水剂相比可有效控制水泥水化历程,与水泥适应性较好。 |
| 9. | Poor thermal stability as a bottleneck has limited the development of liquid crystal photo - alignment technique . the intrinsic reason is that the photosensitive polymer has large space resistance and decreases the reaction degree of the directional photo - polymerization . the effective solution is focused in the increase of orientational order of photo - alignment film
光控取向技术瓶颈问题是稳定性差，其根本原因是光敏高分子空间位阻太大，定向交联的反应度太低，有效解决方法应是降低位阻，提高定向交联度和取向膜分子链段的有序度。 |
