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一棵小草启示鲁班发明锯子的故事,几乎是妇孺皆知的.其实,这棵小草还启示鲁班发明了磨呢!那时候,人们吃麦子,苦于不能把麦子磨成粉来做食品.虽然少量的可以用石头砸成粉,但麦子是椭圆形的小粒,用力小,砸不碎;用力大,又把麦子砸跑了,劳力费时,功效甚微.鲁班决心解决这个问题,可是他思索好久也没想出好办法.于是,他便去仔细观察人们用石头砸麦子的过
A grass revelation Luban saw sawing the story, almost all known to women and children.In fact, this grass also revealed that Luban invented the grinding it! At that time, people eat wheat, suffer from the wheat can not be ground into powder to make food. Although a small amount of stone can be smashed into powder, but the wheat is oval-shaped small particles, with little effort, smashing broken; force, smashing the wheat again, labor and time-consuming, with little effect.Luban determined to solve this problem, but he Thinking for a long time did not come up with a good solution, so he went to carefully observe the people hit the stone with wheat