mechanized top-coal caving mining的用法和樣例：
例句
- In mining, if the hard roof is submitted to shear failure, the sidesteps might sink or even collapse.
摘要綜放面開(kāi)采過(guò)程中，堅硬頂板超前剪切破壞，會(huì )造成工作面臺階下沉，甚至工作面整體垮落。 - With the increase of the depth of coal seams mined, rock bursts will easily occur in gateways with fully-mechanized sublevel caving mining.
摘要隨著(zhù)煤礦開(kāi)采深度增加，綜放開(kāi)采回采巷道易發(fā)生沖擊地壓危害。
