coppering

he doesn't do his coppering by the book.

他执行警务并不拘泥于规章制度。

Used AgNO3 Standard solution to measure the content of mercapto heterogeneous ring compound and thioureido derivative in acid coppering gloss agent continuously by potentiometric titration.

以硝酸银标准溶液，采用电位滴定法，连续测定酸性镀铜光充剂中化合物和硫脲衍生物含量。