This is based on the theory that close-range, nonbonded interactions are repulsive, i.e. Steric strain.

这基于这样的理论，即近距离，非键相互作用是排斥的，即立体应变。

A rather more complex case is that of steric isomerism.

更复杂的情形是立体异构问题。

A multi-center fragmentation is governed by steric factors.

多中心断裂受到位阻因素的控制。

A multi - center fragmentation is governed by steric factors.

多中心断裂受到位阻因素的控制。

Severe steric effects at the reactive carbon would impede the substitution.

大的立体效应阻止在碳上的取代。

Severe steric effects at the reactive carbon would impede the substitution .

大的立体效应阻止在碳上的取代。

The steric structure is the main effect on the herbicidal activity as results.

研究结果表明，影响其药效的主要因素是空间结构。

The stereoselectivity was improved by increasing steric hindrance of the reactions.

通过增加反应的空间位阻改进了反应的立体选择性。

Some influences of steric effect, reaction temperature and solvent effects were discussed.

并简单讨论了立体效应，反应温度和溶剂效应对此还原反应的影响。

The steric effects on the reaction of 6, 6-dialkylfulvene with organolithium have been studied.

本文研究了6，6-二烷基富烯与有机锂反应的立体效应。

The steric and staticelectro interaction is the main factors leading to the enantioselectivity.

然而，空间作用是导致沟选择性的主要因素。

Based on this, the selectivity and steric hindrance for the adsorption of bile acids are discussed.

对树脂吸附胆酸过程中的选择性和位阻作了讨论。

The concept of geometrical frame of pre-bonding molecule is introduced to deal with steric packing.

本文提出分子结构在成键前的几何框架概念。

However, the steric effects related to the substituents of PS and EVA cancels this catalytic behaviour.

然而，有关的PS和EVA取代基的空间位阻效应取消此催化行为。

It was considered that steric hindrance and electrostatic repulsion were the main stabilizing mechanism.

空间位阻和静电排斥是其乳状液稳定的主要机理。

The shape equation of the membrane vesicles and the steric force caused by the undulations are described.

介绍了基于这一理论所导出的细胞膜的形状方程序和膜间的热涨落排斥力。

This approach covers the substrate range of aliphatic, aromatic, heterocyclic and steric hindrance ketones.

该催化剂适用于各种脂肪酮、芳香酮、杂环酮和位阻酮。

Their extraction ability markedly decreases with the increase of the steric hindrance from ester alkyl group.

萃取能力随着酯烷基空间位阻的增大而显著降低。

In this paper we discuss the design of fast framerate Bistable Chole-steric Texture (BCT) reflective displays.

本文讨论快帧速双稳态胆甾相(BCT)反射式显示器的设计。

The large steric hindrance group avails to the enantioselectivity, but too much steric hindrance reduces the activity.

大位阻取代基有利于提高对映选择性，但位阻过大降低催化活性。

The reaction mechanism and kinetics of CO2 with primary, secondary, tertiary and steric hindered amines are described.

文章介绍了伯胺、仲胺、叔胺及空间位阻胺溶液反应的机理和动力学。

Due to the steric effect, there may be different toxicity mechanisms between long-chain and short-chain aliphatic alcohols.

由于空间位阻效应，长链脂肪醇与短链脂肪醇可能存在不同的毒性作用机理。

The results indicated that steric, electrostatic and hydrogen-bond donor fields were main factors to inhibition performance.

结果表明：立体场、静电场和氢键供体场是影响苯并咪唑缓蚀剂缓蚀性能的主要因素；

It follow therefore that the steric blocking effects of substituents are reflected in adverse kinetic, rather than thermodynamic factors.

由此可以看出，取代基的主本阻碍反应，是反映在违背动力学因素而不是热力学因素。

The results show that herbicidal activity is closely related to the steric and electronic properties of the 5-position of the benzene ring.

结果表明，此类磺酰脲类化合物的除草活性与苯环5位取代基的立体结构和电场性质密切相关。

The result indicates that there is a good correlation between the distribution of molecular steric and electrostatic field and bioactivity.

结论说明该系列化合物的分子立体场和静电场的分布与生物活性之间有良好的相关性。

The size and steric hindrance of substituent of porphyrin is one of the crucial factors to affect the interaction between porphyrins and DNA.

吡啶取代基的大小和空间位阻是影响相互作用方式的关键因素之一。

SSD could acquire direct and steric image. Reconstruction methods of SCT could display more information of complicated spine fracture directly.

结论SCT重建是了解复杂性脊柱骨折的有效方法，几种SCT后处理方法相结合能更直观全面显示复杂脊柱骨折的具体情况。

The result showed that the steric factors of substituents were important parameters affecting the aerobic biodegradability of the tested compounds.

结果表明，对邻苯二甲酸酯类化合物而言，取代基的空间结构参数是影响受试物好氧生物降解性能的重要因素。