“top and bottom process”的概念、定义、翻译、参考文献-科学参考

单词	top and bottom process
释义	top and bottom process [¦täp ǝn ¦bäd·ǝm ´prä·sǝs] ^METALLURGY A process in which sodium sulfide is added to molten copper-nickel sulfide to form a two-layer melt, with the bulk of the nickel in the bottom layer.
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