英语词汇“tough pitch copper”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	tough pitch copper
释义	tough pitch copper tough pitch copper [′təf ′pich ‚käp·ər] (metallurgy) Copper refined in a reverberatory furnace to adjust the oxygen content to 0.2-0.5%.
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