Orel奥廖尔[苏联西部城市](在莫斯科之南)oren.矿石；矿Oreta ankyran.锚山钩蛾ore grinding磨矿Oreshnonkova奥列什农科娃ore dampness矿石湿度ore deposits成矿作用ore features矿石特征ore analysis矿石分析计ore-system成矿系统ore blending矿石中和ore puddling铁矿搅炼