expansion bit

英 [expansion bit]
美 [expansion bit]

中文释义

伸缩式钻头（钻井用）

单词分析

单词结构：

expansion bit

字母数：13

记忆提示

🎯 重点记忆：

  • 单词拼写：expansion bit
  • 核心含义： 伸缩式钻头（钻井用）

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更新时间：2026-03-17 00:13:45