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1. | 井筒掘进 井巷掘进爆... ... 78 锥形掏槽 pyramid cut 79 井筒掘进 shaft sinking；shaft excavation 80 天井掘进通风 raising ventilation ... s400.blog.163.com | 2. | 井筒掘迸 矿业工程专业词汇英语翻译_专业词汇... ... shaft equipment 井筒设备 shaft excavation 井筒掘迸 shaft extension 立井开凿 ... www.foodmate.net | 3. | 开凿立井提升 ... 用于钢丝绳罐道的立井 For use in vertical shafts with wire rope guide 开凿立井提升（建井用） Shaft excavation ... www.jian-feng.com |
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