1) refractory silver concentrate
难选冶银矿
2) refractory
难选
1.
Test research on beneficiation of refractory oolitic hematite in hebei area;
河北某地难选鲕状赤铁矿选矿试验研究
2.
Study on extracting gold from fine-grained and disseminated refractory gold ore in a certain mine of Shanxi Province;
微细粒浸染型难选金矿石提金工艺研究
3) difficultly washabe coal
难选煤
4) refractory iron ores
难选铁矿
5) refractory mineral
难选矿
6) refractory gold ores
难选金矿
1.
In this article,authors summarized the species,origin of mechanism and process of pretreatment and industrical application bacteria of pretreatment for refractory gold ores,The mea - sures of intensifying biooxidation pretreatment for refractory gold ores were generalized and intro - duced.
论述了预处理难选金矿细菌的种类、来源,浸出机理,浸出工艺及工业应用实践,归纳介绍了强化难选金矿细菌浸出的措施。
参考词条
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。