General,X type bracing often be used in TOXON metal building system,but K type bracing and/or Portal frame bracing also be used it is required.是什么意思_General,X type bracing often be used in TOXON metal building system,but K type bracing and/or Portal frame bracing also be used it is required.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句