valve timing sign

英 [valve timing sign]
美 [valve timing sign]

中文释义

气门正时标记

单词分析

单词结构：

valve timing sign

字母数：17

记忆提示

🎯 重点记忆：

  • 单词拼写：valve timing sign
  • 核心含义：气门正时标记

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更新时间：2026-02-02 12:19:12