查询词典 nitric acid

Character: crystal powder, it likes white or grey ,asepsis ,odorless, and can dissolve in muriatic acid , nitric acid .

性状：结晶粉末，呈白色或灰白色，无毒、无臭、能溶于盐酸、硝酸。

This paper mainly studies effect and influence factor that typical corrosive medium (muriatic acid, vitriol, nitric acid, sodium hydroxide, sodium chloride etc.), consistence and condition temperature acts on the material coated on castiron centrifugal interface (PFEP, PPS, CPE, remodeled epoxy). It is studied that powder electrostatic spray, suspend fluid spray, suspend fluid electrophoresis underside coat etc. technics influences on coat quality coated with above four anticorrosive material. The property analysis is done that above four anticorrosive material and three coat technics adapt to centrifugal pump frame and running dynamic condition. In addition, the effect is introduced that castiron centrifugal coated anticorrosive material is used in coal water with alum.

本文侧重研究了典型腐蚀工作介质盐酸、硫酸、硝酸、氢氧化钠碱、氯化钠盐等品种、浓度、环境温度，对铸铁离心泵过流面的聚全氟乙丙烯、改性聚苯硫醚、改性氯化聚醚、改性环氧四种防腐涂层材料的试验使用效果和影响因素分析；研究了四种涂层材料粉末静电喷涂、悬浮液喷涂、悬浮液电泳底涂等涂装方法工艺对涂层质量的影响；四种涂层材料和三种涂装方法对离心泵结构和运行动态环境的适应性分析；介绍了铸铁离心泵防腐涂层在煤矿矾水中的应用效果。

To oxidizeinto nitric acid,nitrous acid,or any nitrate or nitrite,especially by the action of nitrobacteria.

硝化将氧化成硝酸、亚硝酸或任何硝酸或亚硝酸酯，尤指通过硝化细菌的作用

To oxidize into nitric acid, nitrous acid, or any nitrate or nitrite, especially by the action of nitrobacteria.

硝化将氧化成硝酸、亚硝酸或任何硝酸或亚硝酸酯，尤指通过硝化细菌的作用

As [HNO3] 1.0M,φ decreases with the increase of nitric acid concentration because of the formation of nitrous acid.

当HNO_3浓度大于1.0M时，φ的下降与体系中形成HNO_2有关。

The quantity of nitrous acid is proportional to the power of light and concentration of uranyl nitrate and decreases with the increase of concentration of nitric acid at higher acidity.

亚硝酸的生成量与光照功率和U的浓度成正比，当酸度大于0.1mol/l时，其量随酸度增加而减少。

The oxidation of mono-methylhydrazinewith nitrous acid in nitric acid medium was researched.

采用分光光度法研究硝酸介质中单甲基肼与亚硝酸(HNO_2)的反应。

At the same time, the enthalpy change of 212 kJ/mol for Tempo trapping methyl radical, namely O-〓 bond dissociation energy has been also obtained. This value is close to that of nitrous acid ester and far less than that of nitric acid ester. It is probably due to the relatively strong electron withdrawing capability of nitryl group.

同时我们还测得了甲基自由基与Tempo的反应的焓变，即O—〓键离解能为212 kJ／mol，它接近于亚硝酸甲酯中C—O键的离解能，而小于硝酸甲酯中的键离解能，这可能和硝酸根的吸电子能力较大有关。

Nd and Zr are separated into two groups by stripping with concentrated nitric acid and oxalic acid.

文中给出了硝酸、Nd、Zr等在各级的浓度剖面和它们在各物流中的分布。

The low-grade phosphate ore s with high impurities of sesquioxide were digested in phosphoric acid and nitric acid.

采用正交实验，研究了高倍半氧化物含量的中低品位磷矿在磷酸与硝酸混酸中的酸解行为，并确定了实验室最佳工艺条件：反应温度65℃，液固比14∶1，磷酸浓度(P2O5)20%，硝酸浓度9。

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。