“hydraulic mining of placer”的概念、定义、翻译、参考文献-科学参考

单词	hydraulic mining of placer
释义	hydraulic mining of placer Encyclopedia 工学海滨砂矿开采释 hydraulic mining of placer砂矿露天水力开采用水枪冲采砂矿，并用加压运输或自流运输的方式进行矿石运输的开采方法。
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