Orel奥廖尔[苏联西部城市](在莫斯科之南)oren.矿石；矿ore bearingadj.含矿的ore dilution矿石贪化,矿石贫化ore matching配矿ore terminal矿口码头ore crushers矿石破碎机Orenburgskiy奥伦堡斯基ore sampling(采矿) 矿石取样法ore hardness矿硬orehidectomy去睾丸ore leaching矿石浸出