硝酸

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。

The effect of the molar ratio of guaiacol/methyl- nitrate ,the reaction temperature, the reaction time, the choices of nitrating agent and solvent in the synthesis of 5 -nitro-guaiacol has been studied.

本文研究了愈创木酚／硝酸甲酯的摩尔比、反应温度、反应时间，硝化剂和溶剂的选择对5——硝基愈创木酚合成的影响。

The company has established a 300 tons pilotscale experiment product line for the production of Guanidine nitrate for SRS with international leading level.

公司目前已建成国际领先水平的300吨气囊专用硝酸胍中试生产线，产品全部出口。

All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on th...

本法用硝酸铁为标准液，水杨酸钠作指示剂，在 pH=3左右作滴定；当溶液呈橙黄色时，加入适量的乙醇，使其浓度在终点时仍不低于50%。

All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on the r...

本法用硝酸铁为标准液，水杨酸钠作指示剂，在 pH=3左右作滴定；当溶液呈橙黄色时，加入适量的乙醇，使其浓度在终点时仍不低于50%。

All of the methods,published by Guyot,Greeff,Fairchild andVisintin proposed for the determination of fluorine using ferric solutionas standard,are based on the reac...

本法用硝酸铁为标准液，水杨酸钠作指示剂，在 pH=3左右作滴定；当溶液呈橙黄色时，加入适量的乙醇，使其浓度在终点时仍不低于50%。

The ammonium inhibition kinetics of nitrite oxidation could also be described by the Haldane inhibition equation.

亚硝酸氧化的铵氮抑制过程也可较好地用Haldane抑制动力学来描述。

It is the intense heat of lightning that forces the nitrogen to combine with oxygen in the air, forming nitrogen oxides that are soluble in water and fall to the earth in rain as dilute nitric acid.

闪电的高温是氮和空气中的氧化合成能溶于水的氧化氮，随雨水进入土地，稀释成硝酸。

In this work, ZnO nanorods were synthesized on the silicon substrates in a solution of zinc nitrate hexahydrate and methenamine at ~85C for 2 hours.

摘要在本研究中，氧化锌奈米柱是使用硝酸锌六水合物及四氮六甲圜在矽基板上以大约85C温度处理两小时来合成的。

For the development of effective catalysts to be used in biomass gasification ,NiO nanoparticles were prepared by a homogeneous precipitation method involving an aqueous solution of nickel nitrate hexahydrate and urea.

为研制生物质气化用纳米N iO催化剂，文中以六水合硝酸镍为原料、尿素为沉淀剂，采用均匀沉淀法制备了纳米N iO，并利用TGA，XRD，TEM等分析手段对前驱体和产品的性能进行了表征。

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。