Operating weight and groundcontactpressure can be adjusted by filling water or wet sand with greater adjusting scope.
通过加水或湿沙可调节压路机配重和接地比压，调节方便范围大；
2
He developed a complicated graphical method to determine a horse's gait based on the pressure changes of its hooves as they came in contact with the ground.
为了确定马蹄在接触地面时因压力变化而产生的不同步态，他曾经开发了一套复杂的图形方法。
3
The model was valid and reliable because the pressure distribution at the tire groundcontact, the tire ground contact area and shape were in accordance with those reported in the previous papers.