Hardmetals; chemical analysis by flame atomic absorption spectrometry; determination of calcium, potassium, magnesium and sodium in contents from 0.001 to 0.02 % (m/m); identical with ISO 7627-2:1983
硬质合金;火焰原子吸收光谱法化学分析;测定0.001-0.02%(m/m)范围内的钙、钾、镁和钠含量;与ISO 7627-2:1983相同