The Nanpu rainbow bridge in Ezhou city of Hubei province is a concrete- filled steel tubular (CFST) tied rigid frame through arch bridge with a net span of 120m.是什么意思_The Nanpu rainbow bridge in Ezhou city of Hubei province is a concrete- filled steel tubular (CFST) tied rigid frame through arch bridge with a net span of 120m.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句