steric hindrance的意思

steric hindrance中文翻譯：

[化學]位阻，位阻現象

相似詞語短語

hindrance───n.障礙；妨礙；妨害；阻礙物

hindrance obstacle───障礙物

雙語使用場景

In the end, the steric hindrance of the acetyl group was discussed.───最后，本文討論了空間位阻效應對反應性質的影響。

The stereoselectivity was improved by increasing steric hindrance of the reactions.───通過增加反應的空間位阻改進了反應的立體選擇性。

Based on this, the selectivity and steric hindrance for the adsorption of bile acids are discussed.───對樹脂吸附膽酸過程中的選擇性和位阻作了討論。

The results indicate that the larger steric hindrance in the amino alcohol unit of Schiff base ligands leads to higher enantioselectivity.───結果表明，氨基醇部分的結構空間位阻越大，產物亞砜的對映選擇性越高；

Thus, we concluded that the steric hindrance of C-terminus might play an important role in opioid receptor affinity.───因此我們推測C-末端空間位阻的大小對于阿片受體的活性可能起著很重要的作用。

Macromolecules cannot approach the ligand owing to steric hindrance of the matrix .───由于載體的立體位阻的關系，大分子化合物不能接觸到配基。

In the forth chapter, we solved the problem of steric hindrance in the third chapter.───本文第四章解決了第三章中位阻太大，不能形成三橋聯分子的問題。

Because of the steric hindrance, the isopropylated 2-MN can gain higher 2, 6-selectivity than the methylated one.───而異丙基取代的2-甲基萘由于異丙基基團的空間位阻效應，可以獲得較高的選擇性。

英語使用場景

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.