roller tractor
常见例句
- Forced-hardening test on roller samples with different diameter was conducted based on the truck's and tractor's half axis made of used 45 steel by shell quenching .
在对汽车、拖拉机半轴采用45钢薄壳淬火的基础上，对45钢不同直径的圆柱试样进行了喷水淬火试验。 - Weigeng ship, Roller-ship and Boat-shaped paddy tractor in boat-farming machinery are working in the principle of floating, which have a good application of farming in the deep mud .
船式耕作机械中的机耕船、机滚船、船形水田拖拉机都是利用浮式工作原理，在深泥脚水田的耕作中有很好的适用性。 返回 roller tractor