英语释义

1. ion exchange in which one cation (as sodium or hydrogen) is substituted for one or more other cations (as calcium and magnesium in hard water) — called also base exchange

片语

cation-exchange adsoption离子交换层析

cation non exchange adsorption阳离子非交换吸咐

cation-exchange auxiliaries阳离子活性助剂

cation-exchange capacity[土壤] 阳离子交换量；阳离子交换能力

Cation-exchange microcolumn阳离子交换微柱

cation n exchange resin阳离子交换尸

cation- exchange chromatography阳离子交换层析

cation-exchange softener阳离子交换软水

cation-exchange packing阳离子交换填充物

英汉例句

• an increase in cation exchange capacity of the tissue should be observed.

  可以观察到植物组织中阳离子置换能力的提高。

• comparing the results, cation exchange resin was proved to be a good separating method for the green substance.

  用阳离子交换树脂可以将该绿色物质成功分离出来。

• the negative influence from chemistry and operator on the measurement of cation exchange capability (cec) with titration method is analysed.

  化学滴定法测量阳离子交换能力（cec）值存在缺陷。

• a new method used to separate and purify lysozyme from egg white by high performance cation exchange chromatography has been established.

  建立了用高效阳离子交换色谱分离纯化蛋清中溶菌酶的新方法，讨论了纯化的工艺条件。

• the membrane potential of shaly sand was influenced by the cation exchange capacity, hydrocarbon saturation and concentration difference of the contacted solutions.

  研究结果表明，泥质砂巖薄膜电位与巖石阳离子交换容量、含油气饱和度、接触溶液浓度差密切相关。

• then-butyl hydroxyethanoate was synthesized by cation exchange resin as catalyst.

  以强酸性阳离子交换树脂为催化剂，合成羟基乙酸正丁酯。

• property of cation exchange of bentonite depends on its special structure. it is the base thatbentonitecan be used to adsorb heavy mental ions.

  蒙脱石的特殊结构决定了其具有一定的阳离子交换能力，这正是膨润土可以用于吸附重金属离子的前提。

• a new process has been developed to synthesize melomic acid from diethyl malonate through hydrolysis reaction and catalyzing by strong acid type cation exchange resin.

  该工艺以丙二酸二乙酯为原料，经强酸性阳离子交换树脂催化，通过水解反应制备丙二酸。

• it shows that nh4 - diatomite, as a carrier adding hydrogen is superior to others which was dealted with other cation exchange treatment.

  表明nh4-蒙脱土作为加氢组分的载体，比其它阳离子交换处理的蒙脱土性能更优越。

• we observed multi peaks for catecholamines in the course of cation exchange chromatography. it means two or more peaks exuded from the column while only one subject was injected into the mobile phase.

  前言：发现了儿茶酚胺类物质在阳离子交换色谱过程中有「多峰现象」 ，即一种物质有两个或两个以上的色谱峰流出色谱柱。

• the catalytic hydroxyethylation of liquid ammonia by cation exchange resin was studied and the reaction mechanism was discussed. according to the experimental data, the kinetic equation was deduced.

  对以阳离子交换树脂为催化剂的液氨羟乙基反应进行了研究，叙述了该催化反应的机理，在对该反应动力学的实验基础上，得到了反应动力学方程。

• at low acidities the extraction is a cation exchange process.

  低酸度时为酸性萃取剂的阳离子交换萃取机理；

• based on this media, a new hydrophilic weak cation exchange stationary phase(wcx) for high(performance) liquid chromatography was synthesized by a new chemical modification method.

  该微球经化学改性后得到一种亲水性良好的新型高效弱阳离子交换色谱固定相。

• free amino acids s content and composition in litchi fruit stones extraction and eluate by 732 cation exchange resin were determined by ics-2500 ion chromatograph.

  为测定荔枝核中的游离氨基酸，采用ics-2500离子色谱分析仪，分别测定了荔枝核提取液与732阳离子交换树脂洗脱液中的氨基酸的组成和含量。

• purposeto explore the possibility of combination of anion and cation exchange chromatography by using the polarity organic solvents in eluent.

  目的研究极性有机溶剂辅助阴、阳离子交换色谱串接组合纯化蛋白质的可行性。

• the authors reported the synthesis of c102 macroporous cation exchange resin from st-dvb copolymer via chlorination and sulfonation, with nb-1 weak polar solvent as pore formation agent.

  以nb-1 型弱极性溶剂为致孔剂合成的st-dvb共聚体为骨架，经氯化、磺化制得c102大孔阳离子交换树脂。

• fatty acid methyl esters were prepared by esterification in a fixed bed reactor from methanol and fatty acids in palm oil deodorizer distillate(podd) using a cation exchange resin as catalyst.

  以强酸性阳离子交换树脂为催化剂，经过自制的固定床反应器，使棕榈油脱臭馏出物（podd）中的脂肪酸与甲醇起酯化反应，合成脂肪酸甲酯。

• the measurement principle and the crystal-chemical formula method, the cation exchange capacity method and alkyl ammonium method are discussed.

  分析了晶体化学式计算法、烷基季铵盐法和阳离子交换容量法的测定原理和计算方法。

• the sample is purified by extraction and cation exchange method, therefore obtaining satisfactory results.

  试样之处理采用萃取法和离子交换法，得到满意的结果。

• the technological conditions of nonylphenol production from phenol and nonene using acidic cation exchange resin as catalyst were studied.

  研究了以苯酚、壬烯为原料，酸性阳离子交换树脂为催化剂，进行烷基化反应生产壬基酚的工艺条件。

• the synthesis of isobutyraldehyde 1,2-propanediol acetal from isobutyraldehyde and 1,2-propanediol catalyzed by the strongly acidic cation exchange resin of styrene system was studied.

  在强酸性阳离子交换树脂催化剂存在下，以异丁醛、1，2-丙二醇为原料，直接合成异丁醛1，2-丙二醇缩醛。

• the peculiar structure of montmorillonite k-10 makes it has cation exchange capability, and it is the base that montmorillonite k-10 can be used to adsorb heavy mental ions.

  钾基蒙脱石的特殊结构决定了其具有一定的阳离子交换能力，这正是钾基蒙脱石可以用于吸附重金属离子的前提。

• the pertinent data from the plugs show that the decrease of the fluid permeability is dependent on the cation exchange capacity of the core samples.

  实验样品相关测量数据说明，样品液相渗透率的降低与样品的阳离子交换量有关。

• the possibility of preparation of methylal from methanol and formaldehyde through slurry catalytic distillation catalyzed by acidic cation exchange resin with large size pores is discussed.

  研究了以甲醇和甲醛为原料，以大孔径强酸性阳离子交换树脂为催化剂，通过浆料催化精馏工艺制备甲缩醛的可行性。

• the structural groups of carbonized products of phenolic aldehyde resin and polystyrene cation exchange resin treated at different temperatures are tested and analyzed with ir method.

  用红外光谱法对不同温度下处理的酚醛和聚苯乙烯阳离子交换树脂碳化产物的结构基团进行了测试分析。

• synthesis of dimethyl succinate from succinic acid and methanol on cation exchange resin nkc-9 was studied under adsorption dehydration with 3a zeolite adsorbent.

  以阳离子交换树脂nkc-9固体酸为催化剂、丁二酸和甲醇为原料，采用分子筛吸附脱水技术合成丁二酸二甲酯。