英语词汇“pennsylvania truss”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	pennsylvania truss
释义	pennsylvania truss noun Usage: usually capitalized P : a truss developed from the Pratt truss especially for bridges with long spans and having subdivided panels, curved top chords for through trusses, and curved bottom chords for deck spans
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