YB/T 4850-2020
直接還原鐵 全鐵、磷、硫、二氧化硅、三氧化二鋁、氧化鈣和氧化鎂含量的測定 波長色散X射線熒光光譜法
Determination of direct reduced iron total iron, phosphorus, sulfur, silica, aluminum oxide, calcium oxide and magnesium oxide content by wavelength dispersive X-ray fluorescence spectrometry
YBT4850-2020, YB4850-2020