可是青銅本來就是人家先發明的，鉛來源是非洲。比商朝早的多。有同位素跟蹤。

來源: tennisfan87 於 2023-08-15 15:20:56 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.