n.变速喂料辊 variable-speed feed roll: 变速喂料辊variable speed feed: 变速输送variable roll: 变滚动feed roll: 供片辊; 进料辊; 馈带辊; 排种槽轮; 输纸辊; 送料辊roll feed: 辊式进给装置; 输出轴下载手机词典可随时随地查词查翻译