operation certificate of machinery

英 [operation certificate of machinery]
美 [operation certificate of machinery]

中文释义

机械操作证

单词分析

单词结构：

operation certificate of machinery

字母数：34

记忆提示

🎯 重点记忆：

  • 单词拼写：operation certificate of machinery
  • 核心含义：机械操作证

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更新时间：2026-02-04 20:20:41