?平面规划器
... 地模法 floor planner 平面规划器 floor quarry 铺地砖 Flotation ...
采石场底部 ; 采掘面前面的平地
采石场底部
缸砖地面
It follows a major rock fall at the quarry in April 2012 that saw half a million tonnes of rock cover the quarry floor and hamper operations at the site.
BBC: Penrhyn Quarry wins Welsh government loan help
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