“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	system of secret appointment of crown prince system of segmental repair and defense of embankments system of selecting of ficers in ancient China system of separating lending survey from loan review and loan origination system of sets system of shares in enterprises system of signs system of solutions system of special protection of labour for underage worker system of spherical coordinates system of strongly elliptic equation system of strongly elliptic equations system of subgroups system of submanifolds system of subvarieties system of systems system of teacher education system of teacher engagement system of testing and appointment system of the discipline inspection and supervision System of the Historiography Institute system of the palace library system of the pollution accident reporting and its handling system of the provisional central government of the Soviet Republic of China system of the upper and lower garment

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