The hardware constitution, control principle and performance of the HITACHI IGBT vector converter system for 1800 cold rolling and continuous annealing unit of Baoshan Iron &Steel Co. are presented.是什么意思_The hardware constitution, control principle and performance of the HITACHI IGBT vector converter system for 1800 cold rolling and continuous annealing unit of Baoshan Iron &Steel Co. are presented.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句