primary annulus

英 [primary annulus]
美 [primary annulus]

中文释义

初级齿圈

单词分析

单词结构：

primary annulus

字母数：15

记忆提示

🎯 重点记忆：

  • 单词拼写：primary annulus
  • 核心含义：初级齿圈

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更新时间：2026-01-28 10:02:28