大x 和小x 排队
为啥我用手推,同样的力气,小x滑的远,大x好像阻力比较大http://image.rcfans.com/pic/20240523/1716456044453133688.jpg?x-oss-process=image/watermark,image_cGljLzIwMjExMDA2L29zc18xNjMzNTM0ODIxOTgzXzg2NF81MzNfNTYucG5n,t_50,g_se,x_20,y_20 大x 齿轮 轮胎都大,运行阻力肯定也更大,参考 手推奥拓 再手推奥迪https://app.rcfans.com/public/emotion/face_wangchai.png 电机磁性有阻力啊
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