primary rockwell hardness standard machine

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中文释义

原级洛氏硬度标准机

单词分析

单词结构：

primary rockwell hardness standard machine

字母数：42

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🎯 重点记忆：

  • 单词拼写：primary rockwell hardness standard machine
  • 核心含义：原级洛氏硬度标准机

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更新时间：2026-02-05 01:45:08