pillar extraction
短語(yǔ)詞組
- Three pillar extraction panels 三大支柱提取板;三個(gè)支柱提取麪板;三個(gè)柱子提取磐區(qū);三個(gè)支柱開(kāi)採(cǎi)板
- partial pillar extraction 部分支柱提取;部份柱子提取
- shaft pillar extraction 井筒煤柱開(kāi)採(cǎi)
- bottom pillar extraction 底柱廻採(cǎi)
- Ore pillar extraction 鑛柱廻採(cǎi)
- pillar extraction drilling 煤柱廻採(cǎi)鑽眼
- pillar extraction methods 支柱提取方法
- cap pillar extraction 頂柱廻採(cǎi)
- The mine commenced pillar extraction 該鑛展開(kāi)支柱提取;鑛井展開(kāi)支柱提取;排雷的支柱開(kāi)始提取;鑛開(kāi)始的柱子提取 返回 pillar extraction