| 1. | Theoretical studies on the effect of electronic absorption of polar solvents for pyrimidine 溶剂极性对嘧啶电子光谱影响的理论研究 |
| 2. | 5 mutual solubility : easy to dissolve in the alcohols and high polar solvent glycerin , sorbitol 相容性:于醇类及高级性溶剂如甘油,山梨醇有较好的相容性。 |
| 3. | Yh - 938 b applies to middle to high polar solvent system . and yh - 938c applies to low to middle polar solvent Yh - 938b适合于中至高极性溶剂体系,如中高极性防腐漆,环氧防腐漆,工业涂料等。 |
| 4. | If solvents are used for microwave - assisted extractions , there must be sufficient polar solvents in the mixture 微波辅助萃取方法利用微波能量快速高效加热溶剂。萃取在完全密封系统内高温控制,极大降低萃取时间。 |
| 5. | Samples may be dissolved or suspended in a range of polar solvents ( but not acetone or methanol , since they are reaction products ) 试样可以溶解或者悬浮分散在极性溶剂中(但不是丙酮或者甲醇,因为它们会发生反应) 。 |
| 6. | The super - molecular structures of the solute and the solvent molecules connected by hydrogen bonding have been constructed for four kinds of polar solvents 在四种极性溶剂中,我们构造了包括氢键作用的超分子结构。 |
| 7. | The main properties and applications of supercritical hydrofluorocarbon are reviewed . the industrial utilization of supercritical hydrofluorocarbon as a polar solvent to replace supercritical carbon dioxide is also discussed 摘要介绍了超临界氟代烃流体的主要特性及应用,探讨了其作为一种极性溶剂取代超临界二氧化碳溶剂的应用前景。 |
| 8. | Nonpolar solvent with little dielectric constant has good effect to the rate of the reaction , while larger polar solvent without h ( superscript + ) also can increase the rate of the reaction 可以知道对甲醇羰基化这一反应,在极性溶剂中,极性较大且为非质子型的溶济能显著提高反应的速率;非极性溶剂中,介电常数较小的溶剂能增加反应速率。 |
| 9. | Organic bentonite - yh - 938 serial introduction yh - 938 organic bentonite apply to middle polar solvent system , it has very good thickening property in xylene , alcohols , ketone , or their composition solvent . in solvent which contain alcohols or esters , it enjoy the leading place in thickening and viscidity in china Yh 938有机膨润土适用于中极性溶剂体系,二甲苯,重芳烃,醋酸丁酯,酮类,醇类和他们的混合溶剂中具有良好的增稠流变性能,特别是在含醇或含醇溶剂体系中增稠粘度属国内领先。 |