多级螺旋转筒式山药收获机关键部件设计
曹云龙, 杨保健, 李镔, 杨浩, 曹明轩
多级螺旋转筒式山药收获机关键部件设计
Design of Key Components for Multi-Stage Rotary Cylinder Type Unmanned Chinese Yam Harvester
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