“roof strata collapse of working face”的概念、定义、翻译、参考文献-科学参考

单词	roof strata collapse of working face
释义	roof strata collapse of working face Encyclopedia 工学矿井地压灾害释 roof strata collapse of working face采场冒顶采场或巷道等地下空间上部岩体或矿体与原始岩层或矿层脱离，并在重力作用下垮塌、塌落、陷落的过程或现象。简称冒顶。是地下矿山常发、多发灾害之一。
随便看	efficiency test of hydro-generator unit efficiency test of water turbine efficiency wage efficient efficient algorithm efficient catalytic materials efficient criterion efficient divisor efficient estimate efficient estimator efficient frontier portfolio efficient generation efficient growth efficient market hypothesis efficient markets hypothesis efficient parallel algorithm efficient point efficient preference efficient production efficient randomized adaptive designs efficient rendering techniques efficient representation efficient scheme efficient solution efficient statistic

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