crushed surrounding rock road破碎围岩巷道
crushed-rock berm片碎石护坡
crushed wall rock破碎围岩
crushed wall rock lane破碎围岩巷道
crushed run rock未筛分碎石
crushed surrounding rock破碎围岩
closed crushed-rock layer封闭块碎石层
embankment with crushed-rock slope protection块石护坡路基
crushed rock embankment碎石路基