With an example of vein 3 in Jiudian gold deposit,Pingdu,Shandong Province,the simpler procedures and better effects of this method are explained.是什么意思_With an example of vein 3 in Jiudian gold deposit,Pingdu,Shandong Province,the simpler procedures and better effects of this method are explained.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句