The catalyst also contains urea and quaternary ammonium groups, and long-fluorine hydrophobic group which can reduce the surface tension of water.
该催化剂同时含有双脲基和季铵盐基团以及疏水基的长氟链。
And the length and branching of alkyl chain in the hydrophobic group are main structure factors affecting surfactants' efficiency and effectiveness.
而表面活性剂亲油基的碳链长度和亲油基的支化是影响效率和效能的主要结构因素。
The hydrophobic property of the resin has remarkably improved by adding the hydrophobic group of benzene ring to the molecular structure of the resin.
在分子结构上引入憎水基-苯环后，显著提高了脲醛树脂的耐水性。
It was found that polymer with higher hydrophobic group content had stronger recovery after deformation in three kinds of polymers with the same shear viscosity.
实验发现在相同剪切粘度下的三种聚合物，形变恢复能力随着疏水基含量的增大而增大。
The influences of hydrophobic group content on the stability of the silica sols and the surface wettability and vapour stability of the silica membranes were investigated.
研究了憎水基团的添加量对溶胶体系的稳定性和对二氧化硅膜润湿性以及水汽稳定性的影响。
The pyrene fluorescence spectrum shows that depending on the hydrophobic group connected with the main polymer chain hydrophobic association is formed in the aqueous solution.
芘荧光光谱分析表明，该聚合物在水溶液中依靠分子链上的疏水基团形成一定的缔合作用。
In addition, the hydrophobic group of quarternary ammonium compounds was found playing a key role in the action of cationic surfactant on the whole cells and its intracellular enzymes.
此外，研究发现在该作用的过程中，阳离子表面活性剂的疏水基团起到了十分关键的作用。
Based on trials, acid, alkali and oxidant, as bond-breaker existed certain limits, while the reductant with hydrophobic group combined with sulfite can obtain ideal effect and lower cost.
带巯基的还原剂和亚硫酸盐拼用，可获得理想的效果，且成本不高；
The humidity sensor is provided with a humidity-sensitive film made by using a polymer wherein a hydrophilic group is bonded to another hydrophilic group through at least one hydrophobic group.
所提供的本发明湿度湿度传感器具有用聚合物形成的湿敏膜，其中聚合物的亲水基团通过至少一个疏水基团与其它亲水基团结合。
The results show that the introduction of aromatic ring in the alkyl chain increases the size of the hydrophobic group and decreases the capability of surfactant in reducing water surface tension.
在与大庆原油的油水界面性能的研究中发现，其中一类表面活性剂表现出较好的界面性能。
Please group amino acids according to the nature of their side chains: hydrophobic, hydrophilic, polar and nonpolar.
请依据氨基酸支链的性质来分类：疏水性、亲水性、极性与非极性。
Cholesterol is another lipid component of most cell membranes. It has a hydroxyl group, a tiny polar head group so to speak attached to a rigid hydrophobic tail.
胆固醇也是大多数细胞膜脂质的组成成分，它有一个羟基基团，即一个微小的极性头部连接到一个刚性的疏水性的尾端。
Esterase could catalyze the hydrolysis of ester group in the polyester macromolecular and introduce hydrophilic group into the hydrophobic PET...
酯酶可以催化涤纶大分子中的酯基水解，为疏水性的涤纶引入亲水性基团，明显提高涤纶的润湿性及手感。
Microbial conversion is a necessary process in the synthetic routes of steroid medicines, a group of hydrophobic compounds and their intermediates.
微生物转化是许多甾体药物或其中间体合成路线中不可或缺的关键环节。
Microbial conversion is a necessary process in the synthetic routes of steroid medicines, a group of hydrophobic compounds and their intermediates.
微生物转化是许多甾体药物或其中间体合成路线中不可或缺的关键环节。
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