rolled capacitor

例句：

1. 1. This circuit board has a built-in power supply that can charge a rolled capacitor.
   这个电路板内置了一个电源，可以给卷式电容器充电。
2. 2.The engineer used a rolled capacitor to stabilize the system's voltage.
   工程师使用了一个卷式电容器来稳定系统的电压。
3. 3.The device is designed to store energy in a rolled capacitor and then release it when needed.
   该设备设计用于在卷式电容器中存储能量，并在需要时释放它。