The reduction process of SBRF-E gold and silver refining is carried under using SBRF reducer and controlling the redox potential.The purity of the gold products is over 99.99% .是什么意思_The reduction process of SBRF-E gold and silver refining is carried under using SBRF reducer and controlling the redox potential.The purity of the gold products is over 99.99% .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句