查询词典 ammonium carbonate

It is found that the concentration of nitric acid has great effect on reclaiming rate of lead in the processing of nitric acid leaching-lead deposition after investigating the preparation of tribasic lead sulphate from bismuth waste residue by ammonium hydrogen carbonate transformation method.

通过对铋冶炼浸渣采用碳酸氢铵转化法合成三碱式硫酸铅的工艺研究，得出在硝酸浸出—硫酸沉铅工艺过程中影响铅回收率的主要因素为硝酸质量浓度。

The processing principle for the preparation of tribasic lead sulphate from bismuth hydrometallurgy waste residue by ammonium hydrogen carbonate transformation-nitric acid leaching-lead deposition with sulphuric acid-sodium hydroxide synthesis is introduced.

介绍了铋冶炼浸渣采用碳酸氢铵转化—硝酸浸出—硫酸沉铅—氢氧化钠反应合成三碱式硫酸铅的工艺原理。

The mechanisms for AP of the main compositions of composite propellants with additives such as ammonium oxalate, strontium carbonate and AO/SC were studied by FTIR and DSC.

采用傅里叶变换红外吸收光谱和差示扫描量热法研究了草酸铵，碳酸锶及复配的草酸铵/碳酸锶等添加剂对复合固体推进剂主要组分高氯酸铵的作用机理。

The method of preparation heavy rare-earth carbonate crystal was expounded, which used ammonium bicarbonate to precipitate yttrium-based heavy rare-earth solution.

文章阐述了钇基重稀土溶液用碳酸氢氨沉淀得到晶型重稀土碳酸盐的方法。

The precursor was prepared with ammonium zinc phosphate and lithium carbonate as materials via solid state reaction at room temperature.The target product was got after baking the non crystals precursor of the compound.

人们从对有层状结构的磷酸盐性质的研究中获知，大量具有层状结构的磷酸盐化合物能够承受离子交换而且还具有良好的催化性能。

In order to utilize the abundant resources of crude salt,this article provided a process for the preparation of sodium bicarbonate by double decomposition method with sodium chloride and ammonium acid carbonate as raw materials.

为了利用中国丰富的原盐资源，采用氯化钠和碳酸氢铵复分解法制备小苏打。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。