“open-end pillar method”的概念、定义、翻译、参考文献-科学参考

单词	open-end pillar method
释义	open-end pillar method 开端式煤柱回采法
随便看	copalite Copal-Leitz shutter (CLS) Copal square shutter copal varnish Copan cop-and-cop doubled yarn coparallel coparallelism copartnership cop changer cop-cop-yarn cope cope and drag mount cope and drag pattern cope and drag print cope and drag set cope box coped beam coped-lug type anode cope down cope flask cope hole (顶箱孔) cope in steel beam Copel cope level

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