tractors拖拉机
tractorn.【C】拖拉机;牵引车
Tractors full track low speed低速轨道式拖拉机
Tractor-trailer combination半挂汽车列车
tractor-drawn polydisk plow机引垂直圆盘犁
Tractors facilitate farming.拖拉机使耕作便利。
Tractor-trailer mobile robot带拖车移动机器人
Tractor Noise and its Conditions拖拉机噪声及其控制
tractor hydraulic pressure system拖拉机液压系统
tractor liquid-hydraulic system拖拉机液压系统