by-product silver 中文意思是什麼

by-product silver 解釋
副產銀
  • by : adv 1 在側,在旁,在附近。2 (擱)在一邊,(放)到旁邊,(存)在一旁;收著。3 (由旁邊)經過,過...
  • product : n. 1. 產物,產品;製品;產量;出產。2. 結果,成果。3. 創作,作品。4. 【化學】生成物;【數學】積,乘積。
  • silver : n 1 銀;銀幣;錢。2 銀(白)色的。3 銀器;銀絲,銀邊帶。4 〈美國〉【攝影】銀鹽;硝酸銀。adj 1 銀...
  1. Gold reserve in china is characterized by wide and relatively concentrated distribution, large number of medium - small deposits and small number of large - superlarge deposits, slightly lower grade, big proportion of the micro disseminated deposits, large volume and important value of by - product gold and close association of gold and silver

    我國金礦的基本特點是:分佈廣、較集中;中小型礦床多,大型超大型礦床少;金礦品位偏低;微細浸染型金礦比例較大;伴生金礦儲量大,且具重要價值;金銀密切共生。
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