“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	ultimate bearing capacity ultimate boundedness ultimate capacity ultimate capacity of vertically loaded anchor ultimate disposal of radioactive waste ultimate distribution Ultimate Fighting Championship ultimate foundation ultimate frisbee ultimate line ultimate load ultimate load test ultimately compact mapping ultimately periodic sequence ultimate particles ultimate reduction ultimate sequence ultimate strength ultimate strength design method ultimate strengthdesign method ultimate tensile strength ultimate uniform boundness ultimate vacuum ultimatum Ultime Secret

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