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placer mining

/ˈpleɪsər ˈmaɪnɪŋ/

翻译: 一种从河流或溪流河床的砂石等冲积沉积物中提取矿物(尤其是黄金)的采矿方法,通常利用水和重力进行淘洗分选。

1 个条目

phrase

/ˈpleɪsər ˈmaɪnɪŋ/C1formaltechnical
  • zh一种从河流或溪流河床的砂石等冲积沉积物中提取矿物(尤其是黄金)的采矿方法,通常利用水和重力进行淘洗分选。

A method of mining for minerals, especially gold, by extracting them from alluvial deposits such as sand or gravel in riverbeds or streams, typically using water and gravity.

  1. Mining methodC1formal

    A method of mining where valuable minerals, such as gold, are extracted from alluvial deposits (sand, gravel, or sediment) by washing or panning.

    zh砂矿开采

    • Placer mining was common during the California Gold Rush.
    • They used a sluice box for placer mining in the river.
    • Modern placer mining often involves heavy machinery to process large volumes of gravel.