primary speed

英 [primary speed]
美 [primary speed]

中文释义

初速

单词分析

单词结构：

primary speed

字母数：13

记忆提示

🎯 重点记忆：

  • 单词拼写：primary speed
  • 核心含义：初速

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更新时间：2025-12-10 00:21:37