做一辆小型电动拖拉机

[视频作者] 吃a瓜

[视频时长] 7:5

[视频类型] 极客DIY

https://www.youtube.com/watch?v=UkjUH6ozZQw 转自Youtube频道：GEAR SHIFT 原标题：Built Heavy Loading Tractor 12v DC Motor / DC 12 V Wireless Tractor with wood science project