The event featured seminars lead by exhibitors, on large-format offset, JDF and process automation, variable-data printing, perfect binding and finishing applications.是什么意思_The event featured seminars lead by exhibitors, on large-format offset, JDF and process automation, variable-data printing, perfect binding and finishing applications.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句