step counterbore

英 [step counterbore]
美 [step counterbore]

中文释义

阶级式平底扩孔钻

单词分析

单词结构：

step counterbore

字母数：16

记忆提示

🎯 重点记忆：

  • 单词拼写：step counterbore
  • 核心含义：阶级式平底扩孔钻

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更新时间：2025-12-08 20:05:09