英语词汇heap roasting简单造句、意思、用法及例句-英语例句辞典

单词	heap roasting
例句	原声例句新TPO听力 18. It was a process called heap roasting. 这一过程叫做堆烧法。新TPO听力 19. Copper ore contains sulfur, and heap roasting was a way to burn away the sulfur in the copper-so they'd be left with something closer to pure copper. 铜矿含有硫磺，堆烧是烧去铜里面硫磺的一种方法，所以留下的近乎于纯铜。
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