But at present the majority of agriculturaltractor still selected this method to steer, most typically was the tracked combine.
但现在大多数农业拖拉机仍采用这种方式转向，最典型的为履带式联合收割机。
2
On the basis of systematic study, this paper points out: the agricultural hydraulic bulldozer is composed of agriculturaltractor with hydraulic dozer blade.
本文通过对农用液压推土机的系统研究，指出：农用液压推土机是以农用拖拉机配置液压推土铲组成。
3
As main power of agricultural production, tractor is renewed based on its economical life.