steric hindrance发音

意思翻译

[化学]位阻，位阻现象

相似词语短语

hindrance───n.障碍；妨碍；妨害；阻碍物

hindrance obstacle───障碍物

双语使用场景

In the end, the steric hindrance of the acetyl group was discussed.───最后，本文讨论了空间位阻效应对反应性质的影响。

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。

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 results indicate that the larger steric hindrance in the amino alcohol unit of Schiff base ligands leads to higher enantioselectivity.───结果表明，氨基醇部分的结构空间位阻越大，产物亚砜的对映选择性越高；

Thus, we concluded that the steric hindrance of C-terminus might play an important role in opioid receptor affinity.───因此我们推测C-末端空间位阻的大小对于阿片受体的活性可能起着很重要的作用。

Macromolecules cannot approach the ligand owing to steric hindrance of the matrix .───由于载体的立体位阻的关系，大分子化合物不能接触到配基。

In the forth chapter, we solved the problem of steric hindrance in the third chapter.───本文第四章解决了第三章中位阻太大，不能形成三桥联分子的问题。

Because of the steric hindrance, the isopropylated 2-MN can gain higher 2, 6-selectivity than the methylated one.───而异丙基取代的2-甲基萘由于异丙基基团的空间位阻效应，可以获得较高的选择性。

英语使用场景

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

Macromolecules cannot approach the ligand owing to steric hindrance of the matrix.

Experiments showed that pre-coating with sulfur as a steric hindrance layer or wax as a hydrophobic film on urea surface could effectively prevent urea's dissolving in the coating process.

Nevertheless , steric hindrance caused by chemical structure reduces the retention time.

The dependence of chain scission and racemization on temperature results from molecular motion, "cage effect" and steric hindrance during recombination.

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

In the end, the steric hindrance of the acetyl group was discussed.

The results indicate that the larger steric hindrance in the amino alcohol unit of Schiff base ligands leads to higher enantioselectivity.

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