In order to reduce the resistance of the forward direction, to improve the fluency of the peanut plant and soil movement direction to the mining center, shovel surface intersecting lines in parallel to the ground plane section and forward-spline curve

In order to reduce drag, direction of the peanut plant material and soil improvement to dig the smooth movement toward the center of the bucket, to move forward with plane parallel sections intersect in a line spline curve

In order to reduce the direction of advance the resistance, enhances the peanut adult plant and the soil to excavation center direction movement smooth, shovels the surface uses the transect curve in the horizon parallel section plane and the advance aspect line of intersection

In order to reduce the resistance of the direction, improving the direction of peanut plant and soil to the mining center of fluency, shovel in the ground plane is parallel and intersecting lines section with spline curves

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