We commit ourselves to do research into the technology of steel structure and the theory of mechanics, and will continue to put the research into application in the design and manufacture of racking.是什么意思_We commit ourselves to do research into the technology of steel structure and the theory of mechanics, and will continue to put the research into application in the design and manufacture of racking.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句