freezing method well cut的意思|示意
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freezing method well cut的网络常见释义
冻结法凿井 ...论文发表 - xzbu.com 中国论文网 关键词：冻结法凿井；快速施工；中深孔松动爆破 [gap=384]Keywords: freezing method well cut; Rapid construction; In the deep hole loose blasting ...