Multi-hydrogen acid is a kind of compound and it is so called because it has five hydrogen ions.
多氢酸是一种复合物，因含有多个氢离子，而称之为多氢酸。
In this paper, a new acid system that is called multi-hydrogen acid for sandstone acidizing is presented, which has been successfully applied on site.
本文提出了一种新型的砂岩储层酸化处理液¬¬—多氢酸酸液体系，并且已成功的运用于现场施工。
When hydrogen sulfide reacts with the oxygen in the water, the result of that is sulfuric acid.
当硫化氢与水中的氧反应，得到的就是硫酸。
To get to the bottom of this, a chemist recently took bone from the mummy of a Nubian child and dissolved it in hydrogen fluoride, a nasty acid that helps extract tetracycline.
最近，一名化学家提取了一个努比亚幼儿木乃伊的骨头，在深入底层的过程中，将它融化泡入了一种肮脏的氢氧化物——酸中，有助于提取其中的四环素。
That's what's left when formic acid loses a hydrogen ion.
甲酸失去氢离子便形成甲酸盐。
The acetogenic bacteria directly convert all of the carbon in sugar into acetic acid, which is then combined with hydrogen to produce ethanol without the carbon losses, the firm claims.
ZeanChem声称，乙酸细菌直接将所有糖中的碳转化成乙酸，然后与氢结合生成乙醇而没有碳的损失。
Castings and forgings and hydrogen brittleness sensitivity to the spare parts of the appropriate USES weak acid galvanizing.
铸锻件和对氢脆敏感的零件宜用弱酸性镀锌液。
Cheng, hydrogen and oxygen and acid mist escape, not only pollute the environment is also dangerous, and maintenance is needed to add water, acid, has been gradually eliminated by the market.
程中，有氢气和氧气以及酸雾逸出，不仅污染环境还具有危险性，维护时需要加水、加酸，已逐渐被市场淘汰。
Salt: Chemical compound formed when the hydrogen of an acid is replaced by a metal or its equivalent, such as ammonium (NH4).
盐：酸中的氢被金属或相当金属的基团如氨（NH4）取代后所生成的化合物。
Organo mineral compound fertilizers are digested with sulfuric acid hydrogen peroxide and nitric acid perchloric acid respectively and then their total potassium content is determined.
用硫酸—过氧化氢和硝酸—高氯酸分别对有机—无机复混肥料进行消化处理，然后进行总钾含量的测定。
Nitric acid molecules are linked by hydrogen bonds.
硝酸分子以氢键互相连结。
Zinc metal reacts with hydrochloric acid to produce bubbles of hydrogen gas and zinc chloride.
金属锌与盐酸反应产生氢气泡和氯化锌。
The hydroxyl amino acid has been replaced, the resulting compounds can also be regarded as ammonia hydrogen has been replaced by acyl derivatives.
羧酸中的羟基被氨基取代后，生成的化合物，也可看作是氨的氢被酰基取代的衍生物。
The passivess of Boiler by hydrogen peroxide after acid cleaning was studied.
研究了锅炉酸洗后过氧化氢钝化的工艺条件。
Preparation method and chief process conditions of food grade calcium hydrogen phosphate from Kiln - way phosphoric acid are investigated and corresponding flow path is presented.
探讨了由窑法磷酸制备食品级磷酸氢钙的方法和主要工艺条件，提出了相应的工艺流程。
At continuous fermentation, except for formic acid, hydrogen could not continuously produced when using the other acids.
连续发酵实验结果显示，除甲酸外，均不能持续产氢。
The acid reacts with most metals, to produce hydrogen and the metal's chloride, and with oxides, hydroxides, and many salts.
盐酸与大多数金属反应产生氢和金属的氯化物，还能与氧化物、氢氧化物及许多盐起反应。
Some hydrogen is absorbed during the acid cleaning and processing procedure of the mechanical plating process.
经过酸洗并机械镀的零件会吸收一些氢。
Research and development for fhe production of pyrocatechol and hydroquinone by reaction of phenol with hydrogen peroxide and percarboxylic acid as hydroxylating reagent are introduced.
着重介绍用过氧化氢和过氧化羧酸作羟基化剂，使苯酚羟基化生成邻苯二酚和对苯二酚的研究开发进展。
Penicillin G potassium salt can be oxidized by Hydrogen Peroxide or Peracetic acid to give sulfoxide with a yield of 91.5%.
以青霉素G钾为原料，分别采用过氧乙酸和双氧水作氧化剂合成青霉素G亚砜，收率可达91.5 %。
Adipic acid is synthesized by oxidation hydrogen peroxide method with tungstate and peroxide heteropoly acid as catalysts.
分别以钨酸盐、过氧杂多化合物、杂多酸为催化剂，过氧化氢氧化法合成己二酸。
The high yield of propionic acid in mixed acid fermentation was the main reason for the low hydrogen production capacity.
混合酸发酵的发酵产物中丙酸含量较高是产氢能力偏低的主要原因。
Production technologies of food grade calcium hydrogen phosphate such as phosphoric acid purification method, bone glue extraction method and applications are introduced in detail.
本文介绍了国内外食用磷酸钙盐的概况，详细介绍了磷酸净化法、骨胶浸取法等食品级磷酸氢钙的生产工艺以及应用情况。
Formic acid concentration, activated carbon dosage and initial hydrogen peroxide concentration, reaction temperature affect the oxidative removal of thiophene.
甲酸浓度、活性炭加入量、过氧化氢初始浓度及温度对噻吩硫的氧化脱除均有影响。
The reason for hydrogen embrittlement fracture is incomplete removal of hydrogen after acid-washing or electroplating.
是在酸洗电镀后除氢不及时或不彻底导致氢脆断裂。
Phenyl carboxylic acid was produced by oxidation of phenyl formaldehyde using hydrogen peroxide as oxidizing agent and amine hexadecane trimethyl P-W heteropoly acid as catalyst.
以过氧化氢为氧化剂，十六烷基三甲基钨磷杂多酸铵为催化剂，催化氧化苯甲醛制苯甲酸。
Phenyl carboxylic acid was produced by oxidation of phenyl formaldehyde using hydrogen peroxide as oxidizing agent and amine hexadecane trimethyl P-W heteropoly acid as catalyst.
以过氧化氢为氧化剂，十六烷基三甲基钨磷杂多酸铵为催化剂，催化氧化苯甲醛制苯甲酸。
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