“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	diamantine diamegnetism coordination compound diameter diameter artefact diameter effect diameter measurement standard diameter of a circle diameter of a conic diameter of a connected graph diameter of a domain diameter of a graph diameter of a set of points diameter of a sphere diametral diametral pitch diametric diametrical diametrically opposite point diametric chord diametric conic diametric curve diametric hyperplane diametric line diametric plane diametric surface

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