... 非铁类材料 nonferrous material 甲壳类材料 crustacean materials 树脂类材料 resinous material ...
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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。
Diamond is the best material of cutting-tools to cut nonferrous metals.
金刚石是切削有色金属的优选刀具材料。
The Current research status, potential advantages and outlook of ferrous, nonferrous rare metals and precious metals material of Yunnan in 2005 are summarized and reviewed.
评述了云南省2005年黑色金属、有色金属、稀贵金属和陶瓷材料等的研究状况，分析了潜在优势并展望了未来前景。
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