“Johnson concentrator”的概念、定义、翻译、参考文献-科学参考

单词	Johnson concentrator
释义	Johnson concentrator [`jän·sǝn `käns·ǝn´trād·ǝr] ^{MINING ENGINEERING} A device used to separate heavy particles such as metallic gold from auriferous pulp; composed of a shell in the shape of a cylinder that is lined with rubber grooves parallel to the inclined axis.
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