main hole

英 [main hole]
美 [main hole]

中文释义

主井筒

单词分析

单词结构：

main hole

字母数：9

记忆提示

🎯 重点记忆：

  • 单词拼写：main hole
  • 核心含义：主井筒

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更新时间：2026-04-09 11:03:37