retractable steel joist

英 [retractable steel joist]
美 [retractable steel joist]

中文释义

可缩钢梁

单词分析

单词结构：

retractable steel joist

字母数：23

记忆提示

🎯 重点记忆：

  • 单词拼写：retractable steel joist
  • 核心含义：可缩钢梁

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更新时间：2026-04-13 07:29:16