离子

From the ionization constant and electrical neutral principle of weak acid solution, we can draw out chemical balance equation of acid radical ion of acid salt, electric charge conservation equation and supplies conservation equation.

根据弱酸的电离常数和溶液的电中性原理等，可导出其酸式酸根离子的化学平衡式、电荷守恒式和物料守恒式，判断酸式酸根离子所引起的溶液酸碱性及其强弱，从而得出定量判据

In the paper,the effects of the ion type,charge density and molecular weight of polyacrylamide on the retention of mineral fibers and the properties of the paper were studied.

研究了不同离子类型、离子度及相对分子质量的几种聚丙烯酰胺对矿物纤维留着及纸张性能的影响。

Calcium citrate is also used as a water softener because the citrate ions can chelate unwanted metal ions.

柠檬酸钙也可以用来作为水柔软剂，因为柠檬酸离子螯合有害金属离子。

Chelation ion chromatography is suitable for the determination of trace metal ions in complex matrices.

螯合离子色谱可以对复杂基体中的痕量金属离子进行测定。

A low chest of drawers often supporting a mirror and typically used for holding clothes and personal items.

仅仅带低电荷的大的阳离子，能和大的多卤化物离子产生稳定的离子晶格。

Alkylations of benzene with dodecene and/or chloromethane in the room temperature ionic liquid 1-methyl-3-butylimdazole chloride-aluminium chloride as catalyst have been investigated with high conversion and selectivity.

首次研究了在氯铝酸室温离子液体系中二甲苯与苯乙烯的烷基化反应制1-苯基1-二甲苯基乙烷及其衍生物。考察了离子液体催化剂量和反应条件的不同对产物组成及副产物数量的影响。

Chlorophenol and 4-chlorophenol can be transformed to phenol and chloride ion and 2, 4-dichlorophenol to phenol, chloride ion and a small amount of 2-chlorophenol and 4-chlorophenol.

2-氯酚和4-氯酚被还原脱氯生成苯酚和氯离子，2，4-二氯酚被还原脱氯生成苯酚、少量的2-氯酚和4-氯酚以及氯离子。

The essay introduces a new way to measure the total nitrogen of surface water in ion chromatograph .

本文提出了采用离子色谱法测定地表水中总氮的新方法，对离子色谱条件和流动相的选择进行了研究，方法具有良好的精确度、准确度，用于实际样品分析，结果令人满意。

Calcium activated potassium ionic channel is abbreviated to be BK, which is situated at the bottom of hair cell cilium, and is the important ionic channel of the electronic activity of hair cell, take part in the high frequency hearing, the significant change was found in the deafness by using the patch clamp.

钙激活钾离子通道简称BK通道，存在于毛细胞纤毛的底部，是毛细胞电活动重要的离子通道，参与高频听力发生，以往膜片钳的方法证实BK通道在耳聋时电生理功能发生重要改变。

The results of the reaction show that better regioselectivity is obtained when Cd2+ is used as additive and give stereoselective product when cinchonine is used as chiral additive.Keywords: NaBH4, Regioselective,Stereoselective,Benzoyl acetone,Metal ion

结果发现，不同的金属离子添加剂使反应出现不同的化学选择性，而Cd2+离子对苯甲酰丙酮的还原具有较好的化学选择性，同时在辛可宁存在条件下得到了对映体过量的产物。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。