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- The eluent is changed in a regular manner starting with a nonpolar solvent and gradually replacing it by a more polar one. 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。
- Nonpolar solvent with little dielectric constant has good effcet to the rate of the reaction,while larger polar solvent without H + 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剂能显著提高反应的速率 ;在非极性溶剂中 ,介电常数较小的溶剂能增加反应速率。
- Nonpolar solvent with little dielectric constant has good effcet to the rate of the reaction,while larger polar solvent without H+ 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剂能显著提高反应的速率;在非极性溶剂中,介电常数较小的溶剂能增加反应速率。
- Organic montmorillonite (OMMT), possessed stable dispersion in nonpolar solvent, had been prepared by using quaternary ammonium salt and coupling agent complex modification. 采用季铵盐和偶联剂复合改性的方法对蒙脱土(MMT)进行改性。
- 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。
- Hydrophobic molecules tend to be non-polar and thus prefer other neutral molecules and nonpolar solvents. 疏水性分子偏向于非极性,并因此较会溶解在中性和非极性溶液内。
- A molecular thermodynamic model of gas solubility in nonpolar solvents has been established. 本文介绍一个气体在非极性溶剂中溶解度的分子热力学模型.
- This simple and general process is environment-friendly, and the products obtained are amphiphilic and dispersible well in most of the polar and nonpolar solvents. 该制备方法具有一定的普适性,而且简单实用;涉及的反应条件相对温和,获得的产物具有双亲性质,能均匀分散于大部分极性和非极性溶剂中。
- 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。
- Measurement of Diffusion Coefficients of Polar Solvent and Nonpolar Solvent at Infinite Dilution in Polyethylene 极性和非极性溶剂在聚乙烯中的无限稀释扩散系数的测定
- They need the money to stay solvent. 他们需要这笔钱来保持偿付能力。
- The hypothetical universal solvent once sought by alchemists. 万能溶剂炼金术士曾一度寻求的假想的万能溶剂
- nonpolar solvent 非极性溶剂
- All five valences are the ordinary, nonpolar ones. 所有5个价键都是普通的非极性键。
- Alcohol is a solvent of resinous substances. 酒精是树脂性物质的溶媒。
- A solvent with which paint is thinned to the proper consistency. 颜料溶解液,展色剂用以稀释颜料至合适浓度的稀释液
- When he bought the company it was barely solvent. 当他购买该公司时,它仅有足够的钱偿还其债务。
- Smoke is almost as great a solvent as divorce. 吸烟和离婚已变成两大消溶剂。
- Water is a very good solvent for ionic species. 水对各种离子是非常好的溶剂。
- First Mercantile American Bank was solvent. 美利坚第一商业银行具有偿付能力。