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- The acidity of the Carboxylic acid to depends on its induction effect, conjugative effect and steric effect. 光气是无色气体，味甜，它是一个毒性十倍于氯气的肺损害剂，能引起窒息，使用时应注意安全。
- A well-dispersed system could be obtained by mechano-chemical modification using appropriate dosage of polymer dispersants.In the white system, space steric effect indu... 利用适当用量的聚合物分散剂进行机械化学改性,可以得到良好分散的体系。
- This paper reports studies of IR spectra of a series of macrocyclic polyethers and their substitution derivatives and the information of steric effect in the molecule. 内酯冠醚化合物的红外光谱研究报道很少,特别是随醚环的扩大和醚环骨架上不同取代基的引入所引起的中红外光谱的变化尚缺乏研究。
- 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 Stabilization of the mixed species is considerably influenced by statistical effect, electrostatic effect, steric effect, cooprerative effect and covalency of the coordination bond. 混合络合物的稳定性是由如下因素所决定的,即:统计效应,静电效应,共价键性,立体效应和配体的合作效应。
- The charged Pt particles were stabled with electrostatic and steric effect of PDDA and had obvious correlation with pH value of the solution, PDDA polymerization degree and PDDA content. 颗粒的稳定是PDDA长链分子的位阻效应和阳离子的静电效应协同作用的结果，其稳定能力与PDDA的聚合度、PDDA的用量以及反应体系的pH值密切相关。
- Steric effects in 126 may also be responsible for its inertness to the Grignard reagent. （126）的空间效应也是它对格氏试剂反应迟钝的原因
- Steric Effect on the Reaction of N-carboxyanhydrides of Amino Acids with Amines 氨基酸N-羧酸内酸酐与胺反应的位阻效应
- Keywords nitroxyl free radical;Syntheses;acylation;steric effect;catalysis; 氮氧自由基;合成;酰化;空阻作用;催化;
- Punishment had very little effect on him. 惩罚对他没有什么效果。
- It's certain that every effect must have a cause. 无疑，每个结果必定有其原因。
- That measure will be carried into effect very soon. 这项措施将在最近付诸实施。
- My plan has not been carried out with effect. 我的计划未被有效地执行。
- The room shows off her paintings to good effect. 这个房间把她绘画的优点充分显示出来。
- Steric Effects in Rate Constants for Bimolecular Dissociation 离解反应速率常数中的方位因素
- Her words had a soothing effect. 她的话起了安慰的作用。
- It's the music to heighten the dramatic effect. 那是用于提高戏剧效果的配乐。
- I felt comfortable on narcotic effect. 在麻醉剂的作用下我感到舒服些。
- The general effect of the painting is overwhelming. 这幅画给人总的印象是很有气势。
- Her reply is in effect an apology. 她的答复实际上是一种道歉。
