书包超重了自己会叫,风筝可以被“射”上天空,汽车尾气可以用于发电,神奇窗帘会因为室外PM2.5浓度高而自动关合……在安徽合肥市第三十届青少年科技创新大赛上,200多名参赛小发明家的精彩创意和创意作品,让人耳目一新。这些拥抱明天的孩子,正用奇思妙想悄悄改变着世界。本届大赛还有29件科技辅导员作品进入 Bag overweight will be called, the kite can be “shoot ” on the sky, the car exhaust can be used for power generation, magic curtains because of the outdoor PM2.5 high concentration and automatically shut down ... ... Hefei in Anhui thirtyth young people In the science and technology innovation contest, more than 200 wonderful creative and creative works of the participating small inventors are refreshing. These children who embrace tomorrow are quietly changing the world with whimsy. The competition also has 29 science and technology counselors to enter the work