1)purple oxide,紫色氧化物2)purple tungsten oxide,紫色氧化钨3)weathering matters developed from purplish rocks,紫色母岩风化物4)coloring metal oxide,氧化物着色5)orange oxide,橙色氧化物6)black oxide,黑色氧化物
用法例句
This paper introduces the principle of purple tungsten oxide composition and production,the details of production process control,detection methods and the use of ultra-fine tungsten powder and ultra-fine cemented carbide.
