This paper introduces a compacting-enveloping model of vehicle-soil interaction for explaining the form of the effective roughness of terrain.
提出了一种车辆一路面相互作用的压实-包络模型，以探讨软路面有效不平度形成的机理。
In order to control the wind erosion, the measure to enlarge the stubble height and topsoil roughness is most effective.
为了有效防治农田土壤风蚀，对作物进行高留茬处理和通过各种措施增加地表粗糙度，可以达到最大的防风蚀作用。
The effective factors of milling force and the machined surface roughness are focused on when high speed milling TC4.
选择了钛合金tc4进行高速铣削试验，重点研究了高速铣削tc 4钛合金铣削力的影响因素及已加工表面粗糙度。
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