primary hardness standard machine

英 [primary hardness standard machine]
美 [primary hardness standard machine]

中文释义

原级硬度标准机

单词分析

单词结构：

primary hardness standard machine

字母数：33

记忆提示

🎯 重点记忆：

  • 单词拼写：primary hardness standard machine
  • 核心含义：原级硬度标准机

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更新时间：2025-12-08 13:34:08