Arrastre

Ar`ras´tre

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

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.

随便看

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。