|
关注：1
2013-05-23 12:21
求翻译：长平矿大采高工作面区段煤柱尺寸留设是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
长平矿大采高工作面区段煤柱尺寸留设
问题补充： |
|
2013-05-23 12:21:38
Changping coal mine working face with large mining height coal pillar size design
|
|
2013-05-23 12:23:18
chobei mining the Coal Mining Area high benches Martin size stay and set up
|
|
2013-05-23 12:24:58
The long even ore greatly picks the high working surface sector coal column size to remain supposes
|
|
2013-05-23 12:26:38
Changping coal mine working face with large mining height coal pillar size design
|
|
2013-05-23 12:28:18
Changping coal mine working face with large mining height coal pillar size design
|
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
