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-新都网

单词	Pennsylvania truss
释义	Pennsylvania truss noun : 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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Pennsylvania truss