阳离子的

The methods determing the groups in the modified starch have been developed, that is acidimetry for the basicity of acidified starch, complexing titration for the substitution degree of carboxymethyl starch, and heat paste titration and carbonyl process respectively for the carboxyl and nitrogen of oxidized starch.

建立了以酸碱滴定测定酸化淀粉的碱量、络合滴定法测定羧甲基淀粉的取代度、热糊滴定和羟胺法测定氧化淀粉中羧基及羰基、消化定氮测定阳离子淀粉等几种变性淀粉的基团分析方法。

The effect of the solution pH on the surface tension and the critical micelle concentration has also been studied. The experimental results showed that α-CB exhibits excellent surface properties.

实验结果表明，α-癸基甜菜碱具有较低的表面张力和临界胶束浓度，且以两性离子形式存在时比阳离子形式存在时的表面活性明显增强。

The column test results show that the cation exchange adsorption mainly manifests the K(superscript +) and Ca(superscript 2+) exchange in three kinds of typical soil medium, and the cation exchange function compares the sandy gravel column and the fine sand column is more remarkable in the silty clay column.

测试结果分析表明，在3种典型土壤介质中，阳离子交换吸附作用主要体现为K与Ca(上标 2+)之间的交换，且粉质粘土柱中阳离子的离子交换作用较砾石含砂柱和细砂柱更为显著。

The column test results show that the cation exchange adsorption mainly manifests the K+and Ca2+ exchange in three kinds of typical soil medium, and the cation exchange function compares the sandy gravel column and the fine sand column is more remarkable in the silty clay column.

测试结果分析表明，在3种典型土壤介质中，阳离子交换吸附作用主要体现为K+与Ca2+之间的交换，且粉质粘土柱中阳离子的离子交换作用较砾石含砂柱和细砂柱更为显著。

Ionic liquid is a salt melting at about room temperature, which consists of organic cation and inorganic or organic anion. Four methods for synthesizing ionic liquid are reviewed.

室温离子液体是由有机阳离子和无机或有机阴离子构成的、在室温或室温附近温度下呈液体状态的盐类。

The topological resonance energy method was applied to all the open structure isomers of C36X to investigate their aromaticity.

采用拓扑共振能方法对富勒烯C36X开环结构中的所有可能的异构体及阳离子和阴离子芳香性进行了理论研究。

The aromaticity of C36X cations and anions are interpreted.

对C36X的阳离子和阴离子的芳香性进行了解释。

So low-dose polymyxin B can be used safely in clinic.

多粘菌素B是一种环状阳离子多肽类抗生素，既有抗菌作用，又能拮抗内毒素活性，但其严重的肝肾毒性限制了临床应用，后来有人发现小剂量的多粘菌素B可保留中和内毒素作用，而无抗菌作用，使用安全，值得在临床上推荐使用。

In doing so, the polymerised carbon-chains are reconstituted in the form of clay-humus complexes, which absorb cations such as calcium, ammonium, magnesium, potassium, sodium and others.

这样，聚合的碳链以粘土腐殖质复合物的形式重组了，并吸收阳离子，如钙、铵、镁、钾、钠等。

Objective:To introduce a new rapid detennination method of cations and anions in dialysis solution for artificial kidney .

目的：建立一种快速测定人工肾透析液中的阳离子Na~+、K~+、Ca~(2+)、Mg~(2+)，和阴离子Ac~-、Cl~-的新方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。