电子工业中很多元件要用银(电极等),还有装饰用银用量也比古代长了数百倍数千倍
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送交者: 2Cul4U4 于 2005-5-16, 13:07:25:
回答: Where are those silver bullions used as a means for payment in our ancient time? 由 liweikang 于 2005-5-16, 10:24:23:
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