The principle materials used for tools can be divided into three major categories: ferrous material, nonferrous material, and nonmetallic material.(用來做工具的主要材料可以被分為三大類：黑色金屬材料，有色金屬材料，非金屬材料。)

Yunnan mainly exports tobacco, machinery and electrical equipment, chemical and agricultural products, and non-ferrous metals.(云南主要出口煙草、機械和電器設備、化學和農業產品以及有色金屬。)

Each part is a book, in this case a 512-page tome on ferrous metallurgy by Donald B. Wagner, the 24th book in the series.(每部分編撰成書，這次出版的是唐納德.瓦格納的512頁厚的煉鐵術，本系列的第24本書。)

The two nations agreed to 20 trade deals covering new energy, agriculture, cotton and non-ferrous metal imports.(兩國簽署了20個商貿協議，涉及新能源、農業、棉紗進口和有色金屬進口多個領域。)

Be responsible for new product development process of rubber, plastic parts and non-ferrous metal manufacturing technique.(負責批量生產過程中橡膠、塑料件及其非金屬零件的質量問題的分析、解決。)

Formerly, KUST was under the direct control of China Non-ferrous Metal General Corporation.(原隸屬于中國有色金屬工業總公司，1998年劃歸云南省管理。)

Gas stirring is a common technology used in both nonferrous metallurgy and ferrous metallurgy.(氣體攪拌是有色金屬冶金與鋼鐵冶金中常用的一種技術。)

Ferrous iron reduces to ferric iron.(二價鐵能還原成三價鐵。)

Powder metallurgy is a highly developed method of manufacturing reliable ferrous and nonferrous parts.(粉末冶金是一種高度發達的制造可靠鐵或非鐵零件的方法。)

Enterprises operating range is the cutting of black and non-ferrous metals processing and marketing.(企業的經營范圍是黑色和有色金屬的切削加工和銷售。)