perforation ring

英 [perforation ring]
美 [perforation ring]

中文释义

穿孔环

单词分析

单词结构：

perforation ring

字母数：16

记忆提示

🎯 重点记忆：

  • 单词拼写：perforation ring
  • 核心含义：穿孔环

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更新时间：2025-12-10 04:49:41