1·There is a capacitor in there.
因为里面有一个电容器。
2·While it is charging, a voltage comparator constantly compares the voltage across the capacitor to a reference voltage.
当充电时，一个电压比较器就不断地将通过电容器的电压和一个参照电压进行比较。
3·When the voltage in the capacitor reached a certain level, it triggered the transistor; the transistor turned on, and the wipers wiped once.
当电容器电压达到一定程度，它便会激活晶体管；晶体管打开，雨刷运转一次。
4·The delightful thing about Dr Ajayan's device is that with suitable tweaking it can be used as a capacitor, a battery, or both.
阿加延教授的设备之所以让人欣喜在于只要进行些许恰当的改动就能让它变成电池、电容器或两者的复合体。
5·The new super capacitor began its electrically charged life with a literal bang.
新型超电容器的制作是从一个精确控制的爆炸开始。