我们还对传统的甲醛—硫酸法进行了改良，并将新的甲醛—硫酸法运用于硝酸尿素金属络合物中的酰氨态氮和总氮含量的测定中。
We also improved the conventional formol-H2SO4 titrimetric method, and applied it into the determinations of the contents of amide nitrogen and total nitrogen in urea nitrate metal complexes.
他和同事们研究了肥料中的一系列化学物质，包括硝酸盐，铵和尿素，观察他们对海藻的影响。
So he and his colleagues tested a range of chemicals found in fertilizers, including nitrate, ammonium and urea, to determine their effects on the algae.
建立了对二甲氨基苯甲醛法和亚硝酸盐——格里斯试剂法两种对牛奶中掺入的尿素的快速检测方法。
In this paper, two rapid detection methods for carbamide in milk, namely p-dimethylaminobezaldehyde method and Nitrite-Griess method, were developed.
采用硝酸钴、硝酸锶及尿素为原料，通过溶胶-水热合成方法制备出掺锶钴氧化物前驱体。
By using cobalt nitrate, strontium nitrate and urea as initiative materials, the precursor of cobalt oxide was prepared by Sol-hydrothermal synthesis.
硝酸类，醋酸类，尿素。
通过室内模拟培养实验，研究了尿素、碳酸氢铵和硝酸钙对设施土壤盐分含量和离子组成的影响。
The effects of different nitrogen fertilizers on salt content and ion composition in greenhouse and open field soil were studied through laboratory incubation experiment.
主要品种有尿素和硫酸铵、硝酸铵、碳酸氢铵、氯化铵、石灰氨、氨水等。
The main varieties include urea, ammonium sulfate, ammonium nitrate, ammonium acid carbonate, ammonium chloride, ammonium lime and ammonia water.
以金属硝酸盐-尿素作为原料体系，引入了升华硫粉，通过低温燃烧法一步合成了硫化物体系红外响应材料。
Infrared sensitive material CaS:Eu, Sm was synthesized by adding sublimate sulphur and using nitrate-urea as raw material system in a low-temperature combustion synthesis(LCS)method.
介绍用酸性尿素溶液作吸收剂，吸收硝酸尾气中氮氧化物的净化方法。
The method for removing nitrogen oxides in the effluent gas from manufacturing nitric acid by using acidic urea solution as an absorbent to absorb the nitrogen oxides is introduced.
用水合硝酸盐作氧化剂、以尿素为燃料 ，根据推进化学计算原料的配比 ，进行了复相PSZ超细陶瓷粉的低温燃烧合成 。
Multi phase PSZ micro_powders were prepared by low temperature combustion synthesis (LCS) method, with which nitrates were used as oxidizers while urea as fuels.
B保水剂对尿素的保持效果8次淋溶后与C保水剂相近，对硝酸铵的保持效果介于其他两种保水剂之间。
The nitrogen holding capacity of SAP-B is similar to that of SAP-C after 8 rounds watering for urea, but it is moderate for ammonium nitrate.
以尿素和硝酸铵为原料 ，在催化剂的存在下合成硝酸胍。
The method of synthesis guanidine nitrate from urea and ammonium nitrate in the presence of catalyst is discribed in this paper.
以尿素和硝酸铵为原料 ，在催化剂的存在下合成硝酸胍。
The method of synthesis guanidine nitrate from urea and ammonium nitrate in the presence of catalyst is discribed in this paper.
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