tractor feed

tractor-feed的词性：
n.Computer Science （名词）【计算机科学】

1. A mechanism for automatically advancing continuous-form paper through a printer by means of two or more toothed tractors that catch the perforations along the edges of the paper.
拉纸器：通过两个或更多的带齿的拉纸装置咬住纸张边缘的穿孔而使通过打印机的连页形纸张自动前进的一种机械装置