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J2214受迫振动和共振演示器
受迫振动和共振用于中学物理教学讲述受迫振动和共振现象。该仪器采用弹簧钢片作振子,安装在小电动机上的偏心轮转动时对弹簧钢片产生策动力,使钢片受迫振动,调节小电机的工作电流以改变偏心轮转动频率。振子振幅大小通过刻度板上的刻度来显示。
J2214 Forced Vibration and Resonance-Demo
It is used for the secondary school physical to explain  the forced vibration and resonance phenomenon. The equipment used to make steel spring oscillator, a small motor mounted on the eccentric rotation when spring steel have a dynamic policy so that the vibration of steel forced to regulate the work of a small electrical current to change the frequency of eccentric rotation. Oscillator amplitude scale adopted by the size of the board to show the scale.

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