“ancient bronze casting technique”的概念、定义、翻译、参考文献-科学参考

单词	ancient bronze casting technique
释义	ancient bronze casting technique Encyclopedia 工学﹝古代机械制造技术﹞释 ancient bronze casting technique古代青铜冶铸技术铜是人类历史上最早使用的金属，青铜是红铜（纯铜）加锡、铅熔制而成的合金，熔点为700～900℃，比红铜的熔点（1083℃）低。
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