concave
特殊用法auger-type grate concave1.■螺旋式栅格凹板blank concave1.■无钉齿凹板块[组]channel bar concave1.■槽杆式凹板closed type concave1.■闭式凹板; 无孔凹板double concave1.■双凹grate -type concave1.■栅格式凹板gird -type concave1.■栅格式凹板lattice-type concave1.■栅格式凹板open-type concave1.■栅格式凹板moving concave1.■活动式凹板rethresher concave1.■复脱[除芒]器凹板, 二次脱粒器凹板spike-tooth concave1.■钉齿式凹板wire-rod concave1.■钢丝 网筛式凹板