论文部分内容阅读
高中物理第二册(必修)第359页18题中说:“……汽车上的速度表(编者注:应为速率表)中的蹄形磁铁与发动机转轴相连,发动机工作时,转轴带动磁铁旋转;……指针即在刻度盘上指示出车速的大小.”其
High school physics book 2 (required) page 359 of the 18 questions said: “... the speedometer on the car (editor’s note: should be the speed meter) in the shoe magnet is connected to the engine shaft, the engine works, the shaft drive the magnet Rotate; ...the pointer indicates the size of the speed on the dial.”