secondary refining

英 [secondary refining]
美 [secondary refining]

中文释义

二次精炼

单词分析

单词结构：

secondary refining

字母数：18

记忆提示

🎯 重点记忆：

  • 单词拼写：secondary refining
  • 核心含义：二次精炼

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更新时间：2025-02-17 17:43:41