The first step, in ink rollers unmounted, drum before closing running about half an hour, and then set the ink rollers well drop roller so that maintain a uniform plates.是什么意思_The first step, in ink rollers unmounted, drum before closing running about half an hour, and then set the ink rollers well drop roller so that maintain a uniform plates.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句