英语词汇speculum metal的意思翻译、用法及例句-英汉词典-京师网

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词汇	speculum metal
释义	speculum metal noun [ U ] uk/ˈspek.jə.ləm ˌmet.əl/ us/ˈspek.jə.ləm ˌmet̬.əl/ （旧时制镜用的）铜锡合金，镜青铜 a mixture of copper and tin that was used in the past to make mirrors Mirrors made of speculum metal may have also been produced in China and India. 中国和印度可能也生产过用镜青铜做成的镜子。更多例句 Mirrors of speculum metal were hard to produce and were only owned by the wealthy. Speculum metal is an alloy of around two-thirds copper and one-third tin. A small portion of speculum metal, when analysed, yielded iron. Speculum metal and brass cannot be soldered together by the ordinary methods.
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