2) Uneasily mining and processing ore
难采难选氧化矿
3) hard mining and dressing oxidized copper ore
难采难选氧化铜矿
1.
The commercial scale trial of the mining technology of undergound leaching of hard mining and dressing oxidized copper ore in TongKuangyu Copper Mine was introduced (it was a key project in the 9th 5 year plan period).
文中介绍了铜矿峪铜矿难采难选氧化铜矿地下溶浸采矿工业试验 (“九五”重点攻关项目 )。
4) refractory oxidized ore
难选氧化矿
5) refractory oxidized copper ores
难选氧化铜矿石
1.
The chelating collector B130 has some important adventages, such as stronger collecting property and better selectivity for refractory oxidized copper ores, and is capable of convenient utility.
螯合捕收剂B130浮选难选氧化铜矿石具有捕收力强、选择性好、使用方便等优点,尤其是对含铁高、泥化严重的矿石更是如此。
6) refractory copper oxide ores
难处理氧化铜矿
补充资料：难夫难妻(难ｎàｎ)
一名《洞房花烛》。故事片。亚细亚影戏公司1913年摄制。郑正秋编剧，张石川、郑正秋导演。一对素不相识的青年男女，经媒婆撮合拜堂成亲，在封建礼教桎梏下开始艰难的夫妻生活。为中国第一部故事片。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条