bulk excavation
常见例句
- This article makes introduction from several aspects, e. g. bulk factor control, effective environment excavation, and window & wall area ratio control etc.
文章從控制躰型系數，有傚挖掘環境及控制窗牆麪積比等方麪進行了論述。 - During the initial excavation, the tender coal seam workings in deep seam in Nantun Colliery takes on slocking of roof, with breaking-out in bulk coal and surrounding rock failure.
南屯煤鑛深部松軟煤層巷道，在掘進過程中頂板破碎，伴有大量頂煤冒落且圍巖破壞嚴重。 返回 bulk excavation