pilot hole of shaft

英 [pilot hole of shaft]
美 [pilot hole of shaft]

中文释义

井筒检查孔

单词分析

单词结构：

pilot hole of shaft

字母数：19

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🎯 重点记忆：

  • 单词拼写：pilot hole of shaft
  • 核心含义：井筒检查孔

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更新时间：2026-01-19 06:45:51