查询词典 impurities

Because the physical and chemical properties of 5'-Cytidine triphosphate,5'-Cytidine disphosphate and 5'-Cytidine monphosphate are very similar, and thereare many impurities in the solution of zymolysis, the separation of down stream isgreatly difficult.

由于三种磷酸胞苷的理化性质很相近，而且三磷酸胞苷酶转化液中各种杂质含量较多，导致下游分离纯化很困难。

Substitutional impurities have changed the local density distribution of adatom and vacancy, which will somewhat influence nucleation and further change the growth model and the atomistic state of the film.

替位杂质改变了表面吸附原子与空位缺陷的区域分布及密度分布，这将一定程度的影响表面原子的成核，进而改变薄膜的生长模式以及薄膜的微观状态。

If we increase the energy of incident atoms reasonably, which will enlarge adatom yields, vacancy yields and their distribution area, layer by layer growth model will be advanced .B. Influence of substitutional impurities on the stability of noble metals'(111) surface.

在一定范围内适当地提高沉积原子的能量，将有助于扩大表面吸附原子及空位缺陷的产额及分布区域，有利于提高形核密度，降低晶核尺寸，促进薄膜的层状生长。

The results showed that depending relatively largely on temperature, the solubility of xylitol decreased with adding ethanol and increased with adding impurities such as sorbitol or adonitol.

结果表明，木糖醇属于溶解度温度系数较大的一类物质；乙醇的加入可降低木糖醇的溶解度；而阿东糖醇、山梨醇等杂质会适当增大木糖醇的溶解度。

Objective To establish an HPLC method for the determination of asarone and impurities in asarone injection.

目的 建立测定细辛脑注射液的含量及有关物质的高效液相色谱法。

Results Asarone and impurities could be separated well under the condition. Linear calibration curve was obtained in the range of 2～80 mg.L-1 with an average recovery of 100.2%（RSD= 0.37%）.

结果 本色谱条件能分离细辛脑及有关物质；在2~80 mg·L-1浓度范围内，细辛脑的峰面积与其浓度呈线性关系，方法平均回收率为100.2%，RSD为0.37%。

The composition and solubility of the main impurities in crude azelaic acid ,which was the reaction product of ozonolysis of oleic acid,were analyzed in detail.

以油酸臭氧氧化法制备的纯度为88.37%的壬二酸粗品为原料，用固液萃取法分离提纯，得到了纯度为98.73%的壬二酸。

Under the selected chromatographic operation conditions, the 2,2'-Dihydroxy-1,1'-binaphthyl, 2-Naphthol and other impurities could be separated efficiently.

在选定的色谱条件下，1，1'-联－2-萘酚和2-萘酚等杂质之间具有较好的分离效果。

We add little NaCIO and a little CaCk which molar scalar is same with the SO42" to dispose of the impurities, such as iron, manganese, SO42".

按此用量比，可使碳酸氢馁的耗量由原来的4一6吨降低到2吨左右，从而大大降低了生产成本。

Calcitic limestone is mainly CaCo 3 with relatively small amounts of impurities.

方解石灰岩，主要是由CaCo 3和少量的杂质所形成。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。