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单词
castellated beam
释义
WordReference Random House Unabridged Dictionary of American English © 2024
cas
′
tellated beam
′
,
Metallurgy
a 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:2025/11/28 2:04:27