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。
Nonferrous metals is the important part of original material industry in our country.
有色金属是我国原材料工业的重要组成部分。
Nonferrous metals is the important part of original material industry in our country.
有色金属是我国原材料工业的重要组成部分。
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