Based on the experiments of physical properties of desert sand,the driving force of running desert wheeled cross-country vehicle were obtained by calculating force between tire and sand.The experiments about pressuring grass resistance of lengthways lay out grass mechanism were done.According to the vehicle terramechanics theory,desert trafficability of straw-checkerboard sand barriers paving robot was analyzed.

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cross-country vehicle, off-road vehicle：越野汽車

296.圓規(guī) compasses | 297.越野汽車 cross-country vehicle, off-road vehicle | 298.勻加速度 constant acceleration

cross country vehicle：越野車

cross beam 橫梁 | cross country vehicle 越野車 | cross current 橫流交叉流

cross country vehicle：越野車, 高通過性汽車

cross beam 橫梁 | cross country vehicle 越野車, 高通過性汽車 | cross current 橫流交叉流