风扇车风扇车是一种能产生风(或气流)的机械,也叫“扬扇”、“扬谷器”、扇车或扬车。发明于汉代,由人力驱动,用于清选粮食。在概念上人们往往会把它与利用风力作业的机械即风车相混淆。磨盘石磨是用于把米、麦、豆等粮食加工成粉、浆的一种机械。磨是平面的两层,两层的接合处都有纹理,粮食从上方的孔进入两层中间,沿着纹理向外运移,在滚动过两层面时被磨碎,形成粉末。 Fan car fan car is a wind (or air flow) of the machinery, also known as “fan ”, “winder ”, fan car or Yang car. It was invented in the Han Dynasty and was manpower-driven for the purpose of selecting foodstuffs. Conceptually people tend to confuse it with a windmill that uses wind power. Grinding stone is used to mill rice, wheat, beans and other food processed into powder, pulp of a machine. Mill is a flat two layers, the two joints have texture, food from the top of the hole into the middle of two layers, along the texture of the outward migration in rolling over two levels were ground to form a powder.