查询词典 nitric acid

All the pollution is not acid rain, i.e., sulphuric and nitric acid dissolved in precipitation .

酸雨为含有硫酸和硝酸的雨，它并不是造成污染的唯一原因。

It is found that the particle size may be controlled by modulating the quantities of nitric acid and ammonium hydroxide, the quantities of the residues carbonate ions are affected by the quantities of the citric acid and ethylene glycol.

通过调节硝酸和氨水的用量可以控制粉体的粒度，柠檬酸和乙二醇的用量影响产物中碳酸盐的含量。

Influence of fluorine on filtration of acid-insoluble matter, crystal and filtration of calcium nitrate, ammonia neutralization of mother liquor and evaporation process of slurry are discussed based on its increasing slurry viscosity, rowing fine crystal and troubling filtration in production of nitrophosphate by nitric acid decomposing phosphate rock.

介绍在硝酸分解磷矿生产硝酸磷肥的过程中，杂质氟对酸不溶物过滤、硝酸钙结晶及过滤、母液的氨中和及料浆蒸发过程的影响。由于氟的存在使物料粘度增加，结晶细小，过滤变得困难。

Nitric acid oxidation was found to reduce the surface hydroxyl groups in increasing the carboxylic acid groups.

硝酸氧化减少了碳纤维表面的羟基含量，同时增加了碳纤维表面的羧基含量。

Cellulose nitrate was obtained via nitration of cellulose using the mixture of sulfuric acid and nitric acid.

利用粘度法测定了制备的硝酸纤维素的分子量为1.3×10~5 g·mol~(-1)。

Methods: In the presence of hydrochloric acid or nitric acid, geranyl sulfone was prepared from geraniol in isopropyl alcohol or THF under reflux conditions for 18 h or 28 h, respectively.

以异丙醇或THF为溶剂，盐酸或硝酸为催化剂，香叶醇与苯亚磺酸钠回流反应18或28 h得香叶基砜。

Its main synthesis method is nitration of guaiacol by fuming nitric acid and glacial acetic acid as nitration agent.

它的合成目前主要采用愈创木酚硝化法，以发烟硝酸和冰醋酸混酸做硝化剂。

A safe method for p reparing nitro form isp resented which consists of nitrating a startingma2terialwhich the starting material dissolved or sus2pended in sulfuric acid, and a nitrating agent con2sisting of nitric acid, nitrate salts or nitrogen pentoxide is added to the sulfuric acid solution / sus2pension at 210℃ to + 80℃.

当汉语长难句内容的叙述层次与英文基本一致时，可以按照顺序翻译。例10 介绍了一种制备硝仿的安全方法，该方法首先硝化起始原料，起始原料溶解或悬浮于硫酸中，然后在- 10℃～+ 80℃，将硝化剂(由硝酸、硝酸盐或N2O5 组成)加入硫酸溶液或悬浮液中。

The company was established in 2001, covers an area of 16,000 square meters, are set production, sale and service of professional manufacturers, professional production·, chemical pure, pure electronics, industrial pure content specifications such as sulfuric acid, nitric acid, hydrochloric acid, sodium hydroxide, hydrogen peroxide, ammonia and other chemical raw materials and chemical reagents, as well as multi-layer circuit boards, flexible circuits board, semiconductor, electronic plating, chemical plating, wastewater treatment and a variety of electronic device manufacturers to provide supporting services.

公司成立于2001年，占地面积16000平方米，是集生产、销售、服务于一体的专业型厂商，专业生产分析纯、化学纯、电子纯、工业纯等各种规格含量的硫酸、硝酸、盐酸、氢氧化钠、双氧水、氨水等各种化工原料及化学试剂，并为多层电路板、软性电路板、半导体、电子电镀、化学电镀、废水处理及各种电子器件生产厂商提供配套服务。

While the sample was dissolved in nitric acid and hydrofluoric acid, the silicon in sample was removed through evaporating in the form of silicon fluoride. As a result, the matrix interference was eliminated, and meanwhile the high blank value as well as the influence on the life span of graphite tubes due to perchloric acid was avoided.

使用硝酸和氢氟酸消解样品，使硅生成氟化硅蒸发掉，消除了基体的干扰，也避免了使用高氯酸作为消解试剂所引起空白值高及对石墨管寿命的影响。

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。