阴离子的

In order to test heat-resistance of the graft copolymerization of sulphonate onto LV-PAC, the optimal reaction conditions of the graft copolymerization of AMPS onto LV-PAC were studied by using Ce(superscript 4+) as initiator.

为了探讨低粘聚阴离子纤维素接枝磺酸盐共聚物的耐温性能以Ce(上标 4+)为引发剂，研究了LV-PAC水溶液与2-丙烯酰胺－2-甲基丙烷磺酸接枝共聚反应的最适宜反应条件。

A novel macromonomer,polystyrene capped with thienyl group,which can undergos oxidation coupling polymerization,has been synthesized by anionic polymerization of styrene with butyl lithium as the initiator and 3-bromo-thiophene as the terminator.

以丁基锂为引发剂、四氢呋喃为溶剂，在氮气气氛和-78℃下进行苯乙烯阴离子聚合，并加入 3-溴噻吩作为终止剂，从而合成出末端含噻吩基的聚苯乙烯，它可以进行氧化偶联聚合，是一类新的大分子单体。

Under the unsterilized conditions,solution culture experiments were conducted toinvestigate the influence of collection times and interfering factors on the determination oforganic acids in root exudates.

在非灭菌条件下，通过溶液培养试验研究了收集时间和干扰因子对根分泌物中有机酸分离和测定的影响，建立了用阴离子树脂消除干扰离子的方法。

Weaky basic anion-exchange resin was used to isolate and purify fucoidan from kelp Laminaria japonica, and phenol-H2SO4 method was applied to determine total carbohydrates and the optimal processing condition.

对弱碱性阴离子交换树脂分离纯化海带岩藻聚糖硫酸酯的工艺条件进行了研究，并采用苯酚－硫酸法测定总糖浓度绘制解吸曲线，确定最佳样液的pH值和洗脱流速。

It is suggested that the tin species promote the formation of a network as for tin oxide xerogel, through which copper ions and anions migrate.

这告诉我们，锡物质能促进像氧化锡干凝胶那样的网络的形成，铜离子和阴离子就通过它迁移。

Thereinto nano-SnO2 powder is admixed with surface negative ion active solvent dodecyl benzene sulfonic acid sodium salt to reach the purpose of surface modifying.

采用化学沉淀法制备的纳米SnO2粉体，通过表面包覆阴离子活性剂十二烷基苯磺酸钠来达到表面修饰的目的。

In the view of green chemistry and sustainable development, a series of new easily biodegrading amino acid-based anionic surfactants were prepared by reaction renewable resources as starting materials with amino acids.

本文从绿色化学和可持续发展的角度出发，以天然可再生资源为原料，与氨基酸反应合成一系列新型易生物降解的氨基酸型阴离子表面活性剂。

In this paper, we use crylicacid to copolymerized with acrylamide,the copolymerization was studied through molecular weight of polyacrylamide and invert percent, also studied the effect of use different molecular weight and substitution degree APAM to paper strength.

就阴离子聚丙烯酰胺的合成进行了研究，改变反应条件获得了不同分子量的聚丙烯酰胺。

The mechanism of the improved dehydrogenating properties of the NaMgH3 hydride doped by both Ti and F ions was investigated based on the density functional theory.

采用基于密度泛函理论的平面波赝势方法，探讨了Ti阳离子与F阴离子共同掺杂对氢化物NaMgH3放氢性能影响的内在机理。

Together with cathodic capacitance theory and depolarizing mechanism, they provide us with research g...

理论研究表明，阴离子电子发射及电致伸缩作用引起的介质膜强度下降是导致闪火发生的根本原因。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。