disc harrow
柯林斯词典
1. N a harrow with sharp-edged slightly concave discs mounted on horizontal shafts and used to cut clods or debris on the surface of the soil or to cover seed after planting 圆盘耙
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1. N a harrow with sharp-edged slightly concave discs mounted on horizontal shafts and used to cut clods or debris on the surface of the soil or to cover seed after planting 圆盘耙