ferrous

The principle materials used for tools can be divided into three major categories: ferrous material, nonferrous material, and nonmetallic material.(用来做工具的主要材料可以被分为三大类：黑色金属材料，有色金属材料，非金属材料。)

Yunnan mainly exports tobacco, machinery and electrical equipment, chemical and agricultural products, and non-ferrous metals.(云南主要出口烟草、机械和电器设备、化学和农业产品以及有色金属。)

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.(每部分编撰成书，这次出版的是唐纳德.瓦格纳的512页厚的炼铁术，本系列的第24本书。)

The two nations agreed to 20 trade deals covering new energy, agriculture, cotton and non-ferrous metal imports.(两国签署了20个商贸协议，涉及新能源、农业、棉纱进口和有色金属进口多个领域。)

Be responsible for new product development process of rubber, plastic parts and non-ferrous metal manufacturing technique.(负责批量生产过程中橡胶、塑料件及其非金属零件的质量问题的分析、解决。)

Formerly, KUST was under the direct control of China Non-ferrous Metal General Corporation.(原隶属于中国有色金属工业总公司，1998年划归云南省管理。)

Gas stirring is a common technology used in both nonferrous metallurgy and ferrous metallurgy.(气体搅拌是有色金属冶金与钢铁冶金中常用的一种技术。)

Ferrous iron reduces to ferric iron.(二价铁能还原成三价铁。)

Powder metallurgy is a highly developed method of manufacturing reliable ferrous and nonferrous parts.(粉末冶金是一种高度发达的制造可靠铁或非铁零件的方法。)

Enterprises operating range is the cutting of black and non-ferrous metals processing and marketing.(企业的经营范围是黑色和有色金属的切削加工和销售。)