振动使土壤的抗剪强度下降是切削阻力下降的主要原因，同时，铲斗与土壤间摩擦力和粘附力下降，也是切削阻力下降的原因之一。
The main reason is that the cutting intension of soil reduced due to vibrating, and another one is the deducing of friction between bucket and soil.
为探索减小粘附和摩擦阻力的新方法，本文对红点锦蛇腹部鳞片进行了研究。
To find out a new method for decreasing-adhesive force and frictional resistance, this paper re- searched on the Elaphe rufodorsata s ventral scale.
计算了波纹板表面的压力分布，并指出在土壤与农机具粘附系统中波纹形表面摩擦力最大的位置。
For analyzing the adhesion between soil and tillage tools, the profiles of pressure on the wave bulldozing plates were calculated, and we located the position of the maximum friction on the surface.
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