An optimal design of the prestressed box maingirder in a 10-ton and 10-metre gantry crane was made,with the SUMT method applied to the work.是什么意思_An optimal design of the prestressed box maingirder in a 10-ton and 10-metre gantry crane was made,with the SUMT method applied to the work.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句