1) Complicated and hard-to-mine deposits
复杂难采矿床
2) difficult-to-mine complex orebody
复杂难采矿体
1.
The necessity and feasibility of research of mining technology for difficult-to-mine complex orebody is expounded by discussions on the existing problems in productions in Luzhong Metallurgy & mining group Co.
通过对鲁中冶金矿业集团公司目前生产中存在的问题的论述,阐述了复杂难采矿技术研究的必要性与可行性,提出了鲁中复杂难采矿体采矿技术方案。
3) Deep complicated orebody
深井复杂难采矿体
4) Hard to mine iron deposit
难采铁矿床
5) difficult mining copper deposit
难采铜矿床
1.
Research on mining method and optimization of mining preparation system in deep shaft complicated difficult mining copper deposit;
深井复杂难采铜矿床采矿方法及采准系统优化研究
6) complicated gold deposit
复杂金矿床
1.
Inquisition into techniques of controlling blasting for complicated gold deposit;
复杂金矿床控制爆破技术探讨
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