英语词汇“double header”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	double header
释义	DictionarySeedoubleheader Double header Double header A structural member made by nailing or bolting two or more timbers together for use where extra strength is required, as in the opening around stairs. double header double header A header joist made of two pieces of lumber, fixed together by bolts or nails, to provide greater strength than a single piece.
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Double header