并用非极性溶剂或弱极性溶剂进行重结晶。
The product was recrystallized by non-polar or low-polar solvent.
非极性溶剂；
此降凝剂能溶于非极性溶剂，不溶于极性较强的溶剂。
The pour point depressor is soluble in nonpolar solvent and insoluble in the relatively polar solvent.
结果表明：黑玉米色素可溶于强极性溶剂或稀酸溶液中；
The results showed that the black maize pigment was soluble in straight polar solvents or in acid medium.
能抗耐油和非极性溶剂的腐蚀，耐热性能比天然胶、丁苯胶好。
Features: able to endure the erosion of oil-resisting and non-polarity solvent heat isolation is better than the natural rubber and styrene butadiene rubber.
在不同极性溶剂中，化合物的荧光光谱表现出显著的溶剂效应。
The target compound shows strong solvent effect in their SPEF spectra.
本文对极性溶剂中非共价型分子烙印聚合物的制备条件进行了研究。
The paper studied a method of preparing noncovalent molecular imprinting polymer(MIP) in polar solvent.
研究了不同极性溶剂中这些化合物的分子内的光诱导电荷转移现象。
Their photophysical properties were investigated in solvents of different polarities by absorption and emission techniques.
而在高粘度极性溶剂中，分子内旋转损耗是主要的非辐射衰减机制。
Whereas in polar media with high viscosity, the internal rotation loss is the majorly nonradiative decay process.
非极性溶剂正已烷和等体积性溶剂丙酮混合后，提取率有明显下降。
When hexane is mixed with equal volume acetone, the yield decreases sharply, which is the same as cyclo hexane mixed with dichloromethane.
结果表明，所合成树脂在极性溶剂中的溶胀性能均比在非极性溶剂中好；
The results show that the swelling properties of the synthetic resins in polar solvents are better than those in nonpolar solvents.
上述电解质具有极性溶剂和无机酸或有机酸或其盐中任何一种以上的溶质。
The electrolyte comprises a polar solvent and a solute comprising at least one of inorganic acids, organic acids and salts of such acids.
洗脱液以常规的顺序更换，首先用非极性溶剂，然后逐步被极性较强的所替换。
The eluent is changed in a regular manner starting with a nonpolar solvent and gradually replacing it by a more polar one.
如果您的倍增器可以清洗，则必须用非极性的溶剂。(正庚烷是非极性溶剂)。
If your multiplier can be cleaned, then non-polar solvents must be used. (Heptane is a non-polar solvent).
由于这种纳米颗粒的外层被多元醇配体原位覆盖，因而易溶于水及其它极性溶剂。
The nanoparticles can be easily dispersed in aqueous media and other polar solvents due to coated by a layer of hydrophilic polyol ligands in situ.
阴离子型聚电解质在极性溶剂中会发生电离，导致大分子链上带有大量的净负电荷。
Anionic polyelectrolytes can ionize in polar solvent, forming macromolecule chains with lots of anionic charge.
但用异丙醇或非极性溶剂作溶剂时，在相同的条件下，久效磷的分解率为5%左右。
However when the solvent is isopropyl alcohol or non polar solvent the decomposition value of monocrotophos is about 5% in the same condition.
目的比较不同极性溶剂提取铁灯兔耳风与杏香兔耳风成分对3种常见微生物的抑菌作用。
ObjectiveTo compare the effect of different polarity extracting reagents Ainsliaea macroclinidioides and A. fragrans on three kinds of common microorganisms.
当二胺A与对苯二胺的物质的量比例为10∶0～5∶5时，所得聚合物溶解于强极性溶剂。
When the mass ratio of diamine A top -phenylenediamine reached 10 : 0 - 5 : 5, the resultant polymers were soluble in strong polar solvent.
对双（苯并唑）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 problem of photophysics, spectrum and photo isomerization of bis(benzoxadyl) stilbene in different solvents were studied carefully.
溶剂对1-溴代烷烃的选择性也产生显著的影响，非极性溶剂有利于1-溴代烷烃选择性的提高；
The solution type also had significant effect on the selectivity of 1-bromo-hydrocarbon, the no polar solution was favorable for the selectivity.
对这些化合物的紫外光谱研究表明，在非极性溶剂中，在相对高浓度中，杯芳烃衍生物以聚合体形式存在。
The studies on the UV spectra showed that the calixarenes exist in agglomeration form in non polarity solution in relatively high concentration.
极性溶剂和非极性溶剂的两步提取法是迷迭香抗氧化剂和精油综合提取的有效方法，操作简单，容易实施。
Two-step extraction with polar solvents and nonpolar solvents was an effective comprehensive extraction for antioxidant and essential oil of rosemary Rosmarinus officinalis l.
极性溶剂和非极性溶剂的两步提取法是迷迭香抗氧化剂和精油综合提取的有效方法，操作简单，容易实施。
One-step extraction with polar and nonpolar mixed solvents was a method of effective comprehensive extraction for antioxidant and essential oil of rosemary(Rosmarinus officinalis L.
设计合成一系列具有不同取代基的苯甲酰萘（苯）胺衍生物，测定它们在非极性溶剂环己烷中的荧光发射光谱。
A series of prar-and meta-substituted benzanilides were synthesized and their fluorescence spectra in nonpolar solvent cyclohexane were investigated.
在极性溶剂(丙酮)或非极性溶剂(甲苯)中，用三甲基氯硅烷对全硅介孔分子筛m CM - 41进行了表面修饰。
The pure silica mesoporous molecular sieve (MCM-41) was modified on the surface by trimethylchlorosilane in polar solvent (acetone) and apolar solvent (toluene).
在极性溶剂(丙酮)或非极性溶剂(甲苯)中，用三甲基氯硅烷对全硅介孔分子筛m CM - 41进行了表面修饰。
The pure silica mesoporous molecular sieve (MCM-41) was modified on the surface by trimethylchlorosilane in polar solvent (acetone) and apolar solvent (toluene).
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