Concrete with river gravel or quartzite aggregate is of medium difficulty to cut.

溪砂石骨料混凝土或石英岩身材中等难度降低。

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Widely used for granite, basalt, limestone, river gravel, quartz, iron ore, pebbles and other materials, fine crusher.

广泛适用于花岗岩、玄武岩、石灰岩、河卵石、石英石、铁矿石、鹅卵石等多种物料的细式破碎。

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This series of products widely used in the basalt, limestone, river gravel, granite and other types of materials processing and shaping broken.

该系列产品广泛适用于玄武岩、石灰岩、河卵石、花岗石等各类物料的破碎加工与整形。

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Now with Solovev, his shotgun slung over his charcoal black t-shirt, we left the heli-tour boardwalk, wandered the river's gravel shore and sat on brick-red rocks at a pulsing spring called Malachite Grotto.

BBC: Five days in Russia's Ring of Fire

Canaris was hurled off the road, into a gravel parking lot near the river.

NPR: Excerpt: 'Gone Tomorrow'

As well as moving any fallen trees from the river, the authority intends to clear the gravel bar at the bend in the Water of Ruchill, where it burst its banks, to reduce the pressure on the eroded bank.

BBC: Comrie flood defence plans to be sped up by council