异极性

The reaction with heterolytic mechanism is retarded severely in supercritical water, so do the hydrolysis of methyl acetate.

近临界水极性的巨大变化，使得异裂机理类型的醋酸甲酯水解在超临界水中反应速率反而大幅下降，实验数据显示，水解反应温度不宜超过水的临界点。

The problem of photophysics, spectrum and photo-isomerization of bisbenzoxadyl stilbene in different solvents were studied carefully.

对双苯并唑茋化合物在不同极性溶剂中的光谱、光物理及光顺反异构化问题进行了详细研究。

The difference in solvent polarity environment between excited state intramolecular charge transfer and proton transfer states leads to a remarkable ESICT/ ESIPT coupled reaction. In polar, aprotic solvents, in contrast to a unique PT tautomer emission observed in 3-hydroxyflavone (3HF), dual emissions are resolved, consisting of ESICT and ESIPT bands.

不同於化合物3-hydroxyflavone只观察到异构物的质子转移萤光放射峰的结果，在极性、非质子酸溶剂里，我们会观察到3-hydroxyflavone衍合物有两个萤光放射峰，是分别经由ESICT与ESIPT两种不同路径个别的贡献。

15K. It is shown that two main factors, pressure and the polarity of the mixture, influence the EAA tautomerism.

结果表明，EAA的酮式-烯醇式异构化平衡常数随共溶剂极性的增加而减小。

Different concentration methanol-, acetone-, ether-, and chloroform extracts of Corallina pilulifera were used to study their growth inhibitory effects on red tide microalgae Heterosigma akashiwo.

研究了不同浓度的小珊瑚藻组织4种不同极性有机溶剂（甲醇、丙酮、乙醚、氯仿）提取物对赤潮异弯藻的生长抑制作用。

The solvents commonly used in the solvothermal synthesis include alcohols (such as methanol, ethanol, isopropanol, alcohol, ethylene glycol, glycerine, etc.), amines (such as hexamethylenediamine, dimethylformamide, triethanolamine), Acetonitrile and Propionitrile, the differences of functional groups, varieties of kinds together with a wide differences of polarity, dielectric constant and boiling point of organic solvents greatly increase the diversities of the product.

溶剂热合成常用的溶剂有醇类(如甲醇、乙醇、异丙醇、正丁醇、乙二醇、甘油等)，胺类(如己二胺、二甲基甲酰胺、乙醇胺)，乙腈和丙腈等，有机溶剂由于带有不同的官能团，种类繁多，具有不同的极性、介电常数、沸点等，大大增加了合成产物的多样性。

Results show that PV, KV, AV and insolubles of the RSO biodiesel increase, IV decreases during oxidation tests. The iso-octane insolubles are much higher than the total insolubles, which indicate that great attention should be paid when mixing RSO biodiesel with mineral diesel fuel.

结果表明，氧化过程中橡胶籽生物柴油的过氧化值、运动粘度、酸值、不溶物增加，碘值降低，其中异辛烷不溶物比总不溶物量大很多，对于高度氧化的橡胶籽生物柴油与非极性物质如矿物柴油混合时应引起重视。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。