four point contact ball bearing

英 [four point contact ball bearing]
美 [four point contact ball bearing]

中文释义

四点接触球

单词分析

单词结构：

four point contact ball bearing

字母数：31

记忆提示

🎯 重点记忆：

  • 单词拼写：four point contact ball bearing
  • 核心含义：四点接触球

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更新时间：2026-02-23 04:31:40