论文部分内容阅读
在播种作业中,常看到这样现象:在第一行程线上插了笔直的一溜标杆,可是播种车开过去却曲曲弯弯。这是怎么回事?原来所用的标杆大多高
In sowing operations, we often see such a phenomenon: a straight line in the first stroke line a sliding rod, but the sowing car in the past but twisting. What is going on? Most of the original benchmark used high