硝酸

Among these manganese acetate and cerium ammonium nitrate have been used most efficiently.

在众多金属盐类中以醋酸锰和硝酸铈最为有效率。

The process,using strontium nitrate and ammonium bicarbonate as raw materials to develop and produce high purity strontium carbonate is introduced.

介绍了以硝酸锶和碳酸氢铵为原料，研制生产高纯碳酸锶的工艺过程。

The optimal synthesis conditions are that when the mass ratio of amylum and acrylamide is 3:1; NaOH is 75% of acrylamide; the concentration of ammonium ceric nitrate is 5 mmol/L; the N, N′-methylenebisacrylamide and acrylamide is 0.2%; and the reaction temperature controlled in (60±2)℃, the water absorptivity of produced super absorbent can reach to 750 g/g for tap water.

最佳合成条件是：在淀粉与丙烯酰胺的质量比为3：1、氢氧化钠为丙烯酰胺质量的75%、硝酸铈铵的浓度为5mmol/L、交联剂N，N'-亚甲基双丙烯酰胺与丙烯酰胺的质量比为0.2%、反应温度控制在(60±2)℃的条件下，制得的保水扩蓄剂吸水率可以达到750 g水／g。

In the thesis a different anciently modeling method called multidimensional insertion modeling is used for the key parameters modeling in the process of the nitric acid production.

本文在对硝酸的生产过程中的主要参数进行建模的过程中，采用了不同以往的建模方法——多维插值建模。

Developed optical-grade lanthanum oxide, europium oxide, terbium oxide, erbium oxide, high purity cerium oxide, cerium nitrate and indium antimonide, cadmium telluride, germanium sulfide, such as photovoltaic materials, products production base production by the quality indicators are in order to achieve the international advanced level, products are sold to Korea, Japan, the United Kingdom, the United States, India, Taiwan and other countries and regions by the approval and praise.

公司研制的光学级氧化镧、氧化铕、氧化铽、氧化铒，高纯度的氧化铈、硝酸铈及锑化铟、碲化镉、硫化锗等光电材料，产品经生产基地批量生产质量指标均以达到国际先进水平，产品销往韩国、日本、英国、美国、印度、台湾等国家和地区受到首肯和好评。

The usage between HCl and HNO3 must be kept apart thoroughly using effect chemical reagents to avoid aqua regia effectiveness.

为避免王水效应，盐酸与硝酸的使用，必须以有效的化学剂实行彻底隔离。

Polypropylene centrifuge tubes can not be with concentrated nitric acid (95%), aqua regia, toluene, benzene, gasoline, kerosene, ether, etc. from accessing.

聚丙烯离心管不能与浓硝酸（95％）、王水、甲苯、苯、汽油、煤油、乙醚等接触使用。

The approach of preparation method is that, first, blend yttria into hot aquafortis, add silicone grease chemical compound after reaction, cool it to form gel. Second, heat the gel for 1-48 hours to acquire solid fruitage. Third, igloss the fruitage in reducing gas for 1-48 hours. Forth, add anorg and then igloss it in reducing gas for 1-48 hours in the temperature between 800-1600 degree.

它的制备方法，包括以下步骤：1将氧化钇溶入热浓硝酸中，反应后加入硅酯类化合物，恒温形成凝胶；2凝胶加热1-48小时，得到固相产物；3在还原气氛中灼烧1-48小时；4加入无机盐，在800-1600℃范围内，还原气氛中灼烧1-48小时；5稀酸洗涤，干燥后得到稀土激活Y2SiO5荧光粉。

Aquatint:It is an etching process on copper or steel by means of nitric acid.

水彩色调：用硝酸在钢片或铜片上作腐蚀的蚀刻法。

With the use of an additive and treatment of technical phosphorus by dilute nitric acid, the arsenic content in the phosphorus can be reduced from 19010-6 to 3.010-6, thus 95% of arsenic is removed.

通过使用添加剂，用稀硝酸溶液处理工业黄磷，可使黄磷中砷含量由190×10－6降至3.0×10－6，脱砷率达95％。

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。