矿脉顶 apex of vein
apex
- 针对采矿技术条件复杂的薄矿脉开采,推荐采用有钢筋混凝土护顶的下向分层充填采矿法。
The underhand slice stoping method, with reinforced concrete for roof support, is recommended to mine narrow veins where the mining technological conditions are very complicated.
您正在访问的是
中国词汇量第二的英语词典
更多精彩,登录后发现......