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单词 castellated beam
释义

WordReference Random House Unabridged Dictionary of American English © 2024
cas′tellated beam′, 
  1. Metallurgya rolled metal beam the web of which is first divided by a lengthwise zigzag cut, then welded together so as to join the peaks of both halves, thus increasing its depth and strength.
  • 1670–80
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更新时间：2025/11/10 21:15:36