1) fractional-precipitation method
分步沉积
1.
The study on the removal of the metal impurities Sb, Ti etc from the product Nb(OH)_5/Ta(OH)_5 by fractional-precipitation method;
用分步沉积法去除Nb(OH)_5/Ta(OH)_5中Ti,Sb等金属杂质的工艺研究
2) respective sediment method
分步沉积法
3) continuous stepped electrodeposition
连续分步电沉积
1.
Three kinds of methods including electrochemical infiltration, continuous stepped electrodeposition and coelectrodeposition are introduced in detail.
综述了近年来电化学方法制备金属基复合材料的研究进展,具体介绍了电化学渗浸、连续分步电沉积和复合电沉积3种不同的电化学工艺过程。
4) Fourstep deposition process
四步沉积法
5) Two-step electrodeposition
两步电沉积
6) fractional precipitation
分步沉淀
1.
On the basis of theoretical analysis of chemical and physical properties of arsenic, the treatment processes of oxidation and co-precipitation and fractional precipitation and separation were proposed, it was proved through practice that the treatment process has achieved a satisfactory result.
对砷的危害、常规处理工艺的利弊进行了阐述 ,并在对砷的物理化学性质理论分析的基础上 ,提出了氧化共沉、分步沉淀分离的处理流程 ,经实践验证 ,该处理流程取得了满意的效果。
2.
The highly pure、superfine and monosize-distribution strontium titanate crys- talline particles have been synthesized by fractional precipitation, when titanium tetrachlo-ride and strontium chloride were used as raw materials and urea and sodium hydroxide asprecipitation agents.
用四氯化钛和氯化锶为原料、尿素和氢氧化钠为沉淀剂，采用分步沉淀法在低温下合成了高纯、超细、单分散性好的晶态钛酸锶粒子。
3.
The waste Ag-Cu contacts were dissolved in acid,then Ag~+,Sn~(2+) and Sn~(4+)in the solution were removed by fractional precipitation.
将Ag-Cu触点废料用酸溶解,再采用分步沉淀法去除Ag-Cu触点中的Ag+、Sn2+、Sn4+,抽滤后得到含CuCl2的溶液,然后采用液相还原法制备微米级铜粉(质量分数≥99。
补充资料：分步结晶
一种古老的用于分离化学性质相近的金属化合物的方法。此法依靠化合物间溶解度的微小差别，通过重复操作而达到分离的目的。钽、铌复合氟化物（如K2TaF7和K2NbOF5·H2O）的分步结晶，锆、铪复合氟化物（如K2ZrF6和K2HfF6）的分步结晶,铷、钾草酸盐的分步结晶，轻稀土硝酸盐和硝酸铵(或硝酸镁)复盐的分步结晶等，都曾经在工业上应用。此法近年来虽然多被溶剂萃取法和离子交换法所代替，但在某些条件下仍然应用。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条