不是猪的进啊!相传有一次鲁班进深山砍树木时,一不小心,手被一种野草的叶子划破了,他摘下叶片轻轻一摸,原来叶子两边长着锋利的齿,他的手就是被这些小齿划破的,他还看到在一棵野草上有

Question

不是猪的进啊!
相传有一次鲁班进深山砍树木时,一不小心,手被一种野草的叶子划破了,他摘下叶片轻轻一摸,原来叶子两边长着锋利的齿,他的手就是被这些小齿划破的,他还看到在一棵野草上有条大蝗虫,两个大板牙上也排列着许多小齿,所以能很快地磨碎叶片.鲁班就从这两件事上得到了启发.他想,要是这样齿状的工具,不是也能很快地锯断树木了吗!于是,他经过多次试验,终于发明了锋利的锯子,大大提高了工效.
不需要一模一样!意思对就行

Answer 1

Legend has it once Luban cutting trees into the mountains,Once off guard,hands across a leaf weeds,and he won Yimo leaves lightly,on both sides of the original leaves a long sharp teeth,his hand is what these small teeth pierced,and he also saw in one of the weeds on the locusts,two big Banya are also many small teeth,it could quickly grind leaves.Lubanga from the two incidents,have been inspired.He would like to,if this dentate tools can not quickly Juduan the trees!Therefore,he After repeated tests,and finally invented a sharp saw,greatly improving the ergonomics.