One good example is the conversion of iron ore into metal machine tool parts.

将铁矿转化为机床金属零件就是一个很好的实例。

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The machine punches a row of holes in the metal sheet.

机器在金属薄板上冲出一排孔。

《牛津词典》

After telling his father about his history homework, Daniel was encouraged to go out onto their farm with a special machine to find metal.

在告诉父亲他的历史作业后，丹尼尔被鼓励带着一台特殊的机器去他们的农场寻找金属。

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Smelting, metal products and machine-making fell, as a share of industrial output, from 20% in 1991 to 15% in 1996.

ECONOMIST: Chinese statistics

"The archaic system of an X-ray machine and metal detector cannot pick up other potential threats posed by passengers, " Baum says.

CNN: Behavioral screening -- the future of airport security?

"The industry said I was a fool--looking at wood and thinking I could machine it like metal, " he says.

FORBES: Magazine Article