Okay, the user wants me to translate "cupric salt" into Traditional Chinese. Let me start by understanding what "cupric salt" refers to. Cupric is related to copper, specifically the +2 oxidation state of copper. So, "cupric salt" would be a salt containing copper(II) ions.
In chemistry, the term for copper(II) salts in Traditional Chinese is usually 銅鹽. Let me confirm that. "銅" is copper, and "鹽" is salt. So, 銅鹽 directly translates to copper salt. Since the user specified Traditional Chinese and the original term is in English, I should translate it. Also, checking if there's a more specific term, but I think 銅鹽 is the standard term here. No need for explanations, just the translation. So the answer is 銅鹽.