“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	velocity ellipsoid velocity field velocity-flow relation velocity for erosion and sedimentation control velocity gain guidance velocity gradient velocity-gradient force velocity-gradient tensor velocity hodograph velocity in free space velocity loss coefficient of turbine guide vanes velocity matching velocity measurement velocity measurement of radio navigation velocity measurement quantity velocity modulation velocity of detonation velocity of entry velocity of escape velocity of flue gas velocity of fluid flow in porous media velocity of light velocity-of-light cylinder velocity of light, light velocity velocity-of-light radius

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