短語詞組短語powder r metallurgy 粉末冶金學;粉末冶金Powder -metallurgy Parts 佳得偉實業(yè)有限公司Niobium powder for metallurgy 冶金用鈮粉powder fusion metallurgy 粉末熔煉Tantalum powder for metallurgy 冶金用鉭粉powder extraction metallurgy 粉末提取冶金;粉末制取冶金powder -metallurgy bar of tungsten 粉冶鎢條powder metallurgy porous material 粉末冶金多孔材料powder metallurgy structural parts 粉末冶金結構零件 返回 powder metallurgy