GB/T 4698.4-2017
海绵钛、钛及钛合金化学分析方法 第4部分:锰量的测定 高碘酸盐分光光度法和电感耦合等离子体原子发射光谱法
Methods for chemical analysis of titanium sponge,titanium and titanium alloys.Part 4:Determination of manganese content.Potassium periodate spectrophotometry and inductively coupled plasma atomic emission spectrometry
GBT4698.4-2017, GB4698.4-2017