全球白銀總儲量估計為 64 萬噸，全球已探明的銅礦儲量約8.9億噸。

來源: 77721 於 2025-10-16 07:13:08 [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.