GB/T 15072.7-2008 贵金属合金化学分析方法 金合金中铬和铁量的测定 电感耦合等离子体原子发射光谱法 Test methods of precious metal alloys - Determination of chromium and iron contents for gold alloys - Inductively coupled plasma atomic emission spectrometry
Test methods of precious metal alloys - Determination of chromium and iron contents for gold alloys - Inductively coupled plasma atomic emission spectrometry