spectrophotometric method短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 分光光度分析法 A new K coefficient dual wavelength standard addition spectrophotometric method is proposed in this paper for determination of cobalt content in nickel plating solutions with satisfactory results. 提出了一种 K系数-双波长标准加入法，应用于镀镍溶液中钴的测定。 dictall