“roof fall”的概念、定义、翻译、参考文献-科学参考

单词	roof fall
释义	roof fall Encyclopedia 工学岩石地下工程灾害释 roof fall冒顶矿井、隧道（洞）开挖时，采掘作业面或巷道的顶板在矿山压力作用下变形、破坏而脱落，造成顶部大面积垮塌的现象。
随便看	freestyle freestyle of Summer Paralympics freestyle roller skating freestyle ski cross freestyle ski halfpipe freestyle skiing freestyle skiing aerials freestyle skiing moguls freestyle ski resort freestyle ski slopestyle freestyle swimming of Summer Special Olympics freestyle wrestling freestyle wrestling of Summer Deaflympics free subgroup free subscript free substitution free surface free surface approximation free surface boundary conditions free surface planning free system free-tailed bats free term free-term free term indexing

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