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speculum metal中文什么意思

发音:   用"speculum metal"造句
  • 镜齐,制镜用(铜锡)合金。
  • speculum:    n. (pl. -la , spec ...
  • metal:    n. 1.金属;金属制品;金属合金。 ...
  • chinese speculum metal:    中国镜铜; 中国镜用铜锌合金; 中国 ...
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例句与用法

  1. Chinese speculum metal
    中国镜铜

百科释义

    Speculum metal is a mixture of around two-thirds copper and one-third tin making a white brittle alloy that can be polished to make a highly reflective surface. It is used primarily to make different kinds of mirrors including early reflecting telescope optical mirrors.
    详细百科解释

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