1) hard-to-mine ore body
难采矿体
1.
In order to study the stability of hard-to-mine ore body when using overhand drift mining method,we made analysis and comparison on four different structure parameter of Ⅲ mining area in different mining period by using the software ANSYS.
为研究新城金矿极破碎难采矿体用上向水平进路充填法回采时的稳定性,采用ANSYS有限元软件,选择Ⅲ盘区4种结构参数进行了不同开采时期的分析和比较,从而获得了最佳进路规格为5m×7m,一步盘区超前准一步盘区5个分层,即25m,也与矿山试验采场的参数相吻合。
2.
Mining of gently inclined thin and medium thick ore body with unstable roof isregarded as typical hard-to-mine ore body.
顶板不稳定的缓倾斜薄、中厚矿体为典型的难采矿体。
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) Difficultly-mined broken orebody
破碎难采矿体
4) Difficult ore
难采残矿
5) Deep complicated orebody
深井复杂难采矿体
6) Uneasily mining and processing ore
难采难选氧化矿
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