1. Ever wonder how a money changer machine knows if you've given it a one, a five or a ten dollar bill? 有想过货币兑换机器如何知道你放入的是货币是一元、五元或者是十元的钞票呢？
2. With a computer chip and measuring devices, the money changer checks the length, width and thickness of the bill. 货币兑换机通过一块电脑芯片和测量设备来检测钞票的长度、宽度和厚度。
3. The effect of tap changer on transformer winding resistance measurement is described. Some suggestions on the measurement are made. 叙述了分接开关对变压器绕组电阻测量的影响，并对该项测量提出了一些建议。
英英解释
n.
1. a person who changes something
2. an automatic mechanical device on a record player that causes new records to be played without manua
