metallurgyn.冶金学;冶金术
metallurgy of megnesium镁冶金
metallurgy of aluminium铝冶金
metallurgy of rare metals稀有金属冶金
metallurgy characteristics冶金性能
metallurgy in ancient China中国古代冶金
metallurgy of iron and steel钢铁冶金,黑色金属冶金
metallurgy of ferrous metals黑色冶金
metallurgy hydraulic cylinder冶金油缸
metallurgy engineering geology冶金工程地质
metallurgy of lightweight metals轻金属冶金学