The domestic and foreign nodular graphite cast iron standard samples were analyzed with vacuum direct-reading spectrometer and were applied in the routine analysis.
运用真空直读光谱仪分析国产和国外产球墨铸铁标样，并应用在生产实践、炉前分析中；
2
The method for determination of aluminum, copper, iron, phosphorus and silicon in metallic chromium has been studied with a direct-reading inductively coupled plasma emission spectrometer.
阐述了用全谱直读型电感耦合等离子体发射光谱仪测定金属铬中铝、铜、铁、磷、硅元素的测试方法的研究。
3
All development wells of liwa n will be permanently installed with surface direct-reading subsurface pressure gauge and thermometer to support gas reservoir management and production optimization.