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单词 arrastre
释义

Arrastre


Ar`ras´tre


n.1.A rude apparatus for pulverizing ores, esp. those containing free gold.

arrastre


arrastre

[ə′rä·strə] (mining engineering) A mill comprising a circular, rock-lined pit in which broken ore is pulverized by stones, attached to horizontal poles fastened in a central pillar, which stones are dragged around the pit. Also spelled arrastra.
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