查询词典 cations

The network is based on a W〓Cu〓 cube-like unit with eight 〓 anions at the corners of the distorted cube and twelve 〓 cations at the middle of the edges, in which a coordination anion 〓 acting as template is capsulated in the cavity of the W〓Cu〓 cube.

该结构中的基本单元可看成是一个类似立方体的W〓Cu〓结构，其中八个〓阴离子位于立方体的顶角，十二个〓阳离子处于立方体的边上，并且有一个〓阴离子作为模板被包裹在此立方体所形成的空腔中。

But not all catalytically interesting transition elements form polynuclear cations appropriate for intercalation.

但并非所有具有催化活性的金属离子都能形成合适的聚合离子嵌入层间形成稳定的层柱材料。

The ion exchange material facilitates the generation of chlorous acid by simultaneously removing unwanted cations from solution and andding hydrogen ion to solution.

所述离子交换材料通过同时从溶液中脱除不想要的阳离子并向溶液中加入氢离子而有利于产生亚氯酸。

A simple, selective and sensitive method was investigated for simultaneous determination of anions (SO2－4, Cl－, NO－3, F－) and cations (Na＋, NH＋4, K+, Mg2＋, Ca2＋) by single-column ion-exclusion-cation-exchange chromatography with conductometric detection. DL-malic acid-methanol-water was used as an eluent.

采用单柱离子色谱系统和电导检测的方法，首次以DL-苹果酸-甲醇水溶液为淋洗液，简便、有效地同时分离、检测了溶液中SO2-4、Cl-、NO-3、F-、Na+、NH+4、K+、Mg2+、Ca2+9种离子。

In this paper, the optimal parameters of co-precipitation are developed aimed at al cations coprecipitation.

本文的主要创新之处在于：以阳离子共沉淀为目标，提出了合理的沉淀工艺参数。

The protic- or Lewis acid catalyzed ring-closure of divinyl ketones (and their acid-labile precursors) pentadienylic cations is known as the via Nazarov cyclization.

质子酸或路易斯酸通过戊二烯基阳离子催化二乙烯酮的环闭合（以及它们的酸不稳定前体）这个反应被称为Nazarov环化。

Furthermore, we found that the polythiophene film showed a cation-sieving effect to the cations with different sizes when it was electrochemically reduced.

同样，该薄膜在n掺杂时对不同的阳离子也有筛选作用。

DETERMINATION OF CATIONIC EXCHANGE CAPACITY AND EXTRACTIBLE CATIONS.

阳离子交换容量和可交换的阳离子的测定

YTY paper reinforcement of the recently developed a new water soluble polymer material, it is a high molecular weight polymer compound ionictype, mechanim, numberrepresentationof exesting non－ionic, and numberrepresentationof anions and cations, so this in paper-making process, you can and pulp fiber molecules multi-spots adsorption, which increases the fine celluiose filler and retention; at the same time it can also promote hydrogen between cellulose, and gives the paper jiantiao dry strength significantly increase, because the reinforcement of the unique structure, so it can be used with other paper cocatalyst compouding, a broad pH range as a reinforcement of the paper is available at wood pulp and wood pulp-straw gamasid mixed pulp and paper pulp etc.

YTY纸张补强剂系近期研制成功的新型水溶性高分子材料，它是一种高分子量复合离子型的高聚物，在其分子结构中，既有非离子基团，还有阴离子、阳离子基团，因此这在造纸过程中，可以与纸浆中的纤维分子形成多点吸附，从而提高填料与细纤维素的留着率；同时它还可促进纤维素分子之间的氢健作用，使纸张干强度明显提高，由于该补强剂分子的独特结构，因此它可与其它造纸助剂复配使用，能在较宽广的pH范围内，作为纸张补强剂，可以在木浆、木浆——草浆混合浆、革浆等多种纸浆中使用。

The structure consists of discrete adamantylammonium cations lying on crystallographic mirror planes and hexa- fluoridogermanate anions disordered about sites of 2/m point symmetry.

它的结构中包含位于晶体学对称面上的离散的金刚烷胺阳离子，而无序的六氟锗酸盐阴离子位于2/m对称点。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。