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Complexation with humic acid calcium and magnesium ions, non-toxic, harmless characteristics, Study of the inhibition of sodium humate properties and the mechanism is of great significance.

腐植酸具有络合钙、镁离子、无毒、无害的特点，研究腐植酸钠的阻垢性能及其机理具有重要的意义。

In the fourth chapter, four new complexes of hydrazide of podophyllic acid with transition metals have been prepared. Elemental analysis, molar conductivity, IR,〓 NMR and TG-DTA were used to characterize them. The results show that general formula of the complexes is M〓(n=0 or 2). The ligand is linked through the carbonyl oxygen and the terminal nitrogen of the hydrazide base to the transition metal ions in bidentate mode.

第四章 合成了四种鬼臼酰肼的过渡金属配合物，通过元素分析、摩尔电导、红外光谱、核磁共振氢谱和热重-差热对配合物进行了表征，研究结果表明，配合物的组成为M〓（n=0或2），配体是通过羰基氧和肼基上的端氮以双齿形式与金属离子配位的。

The molecular structural formula of the rhodamine 6G hydrazide salicylal azomethine is shown on the right, and the present invention discloses the synthesization method of the rhodamine 6G hydrazide salicylal azomethine and rhodamine 6G hydrazide salicylal azomethine solution used for the content determination of a small amount of cupric ions in water sample: 0 percent to 98.99 percent of ethanol, 99.99 percent to 1 percent of acetic acid / sodium acetate buffer solution with the pH value of 5 to 9, in which the total concentration of acetic acid is 1 to 100 millimoles per litre, 0.01 percent of N, N-dimethylformamide and 1ppm to 100ppm of rhodamine 6G hydrazide salicylal azomethine, all measured in mass percentage.

罗丹明6G酰肼水杨醛希弗碱，分子结构式如右，本发明公开了罗丹明6G酰肼水杨醛希弗碱的合成方法及其用于水样中微量铜离子含量测定的溶液：0～98.99％乙醇，99.99～1％pH值5～9的醋酸/醋酸钠缓冲溶液，该缓冲溶液中醋酸总浓度为每升1～100毫摩尔，0.01％N，N-二甲基甲酰胺和1～100ppm罗丹明6G酰肼水杨醛希弗碱，均为质量百分含量。

If they are accumulated to a considerable level, elimination of these ions can be carried out by an addition of strong reducing agent such as hydrazine.

如果他们累积到相当大的水平，要除去这些离子是可以透过增添像联氨这样强的还原剂来完成。

Silicon nitride passivation layer existed in standard CMOS process is used as hydrogenous ions sensitive layer, ISFET with multi-layer floating electrode structure works as the sensing unit.

介绍了一种基于上华0.6μmCMOS工艺实现的pH值传感器集成电路的设计和研究，它采用标准CMOS工艺提供的Si3N4钝化层作为氢离子敏感层，并以多层浮栅结构的ISFET作为传感单元。

The properties of most acids, especially in water solut ions , arise from the hydrogen ion (H+, also referred to as the hydronium ion, H3O+, the form in which H+ is found in a water environment).

大多数酸尤其是在水溶液中的酸，其各种性质都是因存在氢离子(H+，亦可产生水合氢离子H3O+，因此任何水的环境都可发现氢离子)而产生的。

A very strong acid, it forms ions of hydrogen or hydronium (H+ or H3O+), hydrogen sulfate (HSO4-), and sulfate (SO42-).

硫酸是一种强酸，能生成氢离子或水合氢离子(H3O+)、硫酸氢根离子(HSO-4)以及硫酸盐(SO2-4)。

The effects of transitional metal ions on the oxiammonolysis of wheat straw alkaline lignin with hydroperoxide were studied.

探讨了过渡金属对麦草碱木质素过氧化氢氧化氨解的影响。

CATALYTIC ACTION OF METAL IONS ESPECIALLY CERIUM ION, IN THE DECOMPOSITION OF t-BUTYL HYDROPEROXIDE

金属离子，特别是铈离子在叔-丁基过氧化氢分解中的催化作用

But a lot of researches showed that Ni-Cr alloys exhibit low resistance to corrosion, which led to release of metal ions, hyperplastic gingivitis, gray line and hypersusceptibility.

但是越来越多的研究表明该合金具有一定腐蚀性，析出金属离子，引起牙龈增生、牙龈黑线、全身过敏等反应。

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。