眼下,如果我们漫步在城市、乡村的大街小巷,就会看到一辆辆造型别致的电动自行车川流而过。电动自行车正以其时尚的外形、节能环保的理念,逐步取代摩托车和自行车成为人们最常用的代步工具。可是你知道吗?一辆小小的电动自行车里面蕴藏的物理知识可多了,它与初中物理中的力 Right now, if we walk in the city, the country streets, you will see a unique style of electric bikes passing by. Electric bicycles are becoming the most commonly used means of transport for people with their fashionable appearance, energy conservation and environmental protection. But do you know that a little electric bike contains more physical knowledge, which is related to the power of junior high school physics