77.099999999999994 标准查询与下载

DB13/T 5090-2019 连铸保护渣 氧化钾和氧化钠含量的测定 波长色散 X 射线荧光光谱法

Determination of Potassium Oxide and Sodium Oxide Content in Continuous Casting Mold Flux by Wavelength Dispersive X-ray Fluorescence Spectrometry

DB13/T 5091-2019 锰铁、 锰硅、 氮化锰铁 和金属锰 硅、 锰和磷含量的测定 波长色散X射线荧光光谱法（熔铸玻璃片法）

Determination of ferromanganese, manganese silicon, ferromanganese nitride and metal manganese silicon, manganese and phosphorus content Wavelength dispersive X-ray fluorescence spectrometry (cast glass method)