As is well known, the effective width depends on several factors, such as the cross-section width, the height of web, the spacing of span and so on.是什么意思_As is well known, the effective width depends on several factors, such as the cross-section width, the height of web, the spacing of span and so on.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句