Composition of chromate treatment soln., technological condition and effects and control of other major factors are discussed.
研究了铬酸盐处理液组成、工艺条件和其它主要因素的影响和控制。
2
Based on application of theories of complexing and precipitation equilibriums and study of etching process using acidic copper chloride etching soln. , a new method of recovering Cu in etching soln.