在新加坡，每辆轿车上都装有一台在通过时自动触发过路收费亭的数字式异频雷达收发机。
In Singapore, every car is fitted with a digital transponder that triggers automatic tollbooths as it passes.
取代了传统的半透明数字式速度和电池电量表。
Replacing the traditional instrument cluster are semitransparent digital gauges for speed and battery life.
数字式电能表是必备设备，应用越来越广泛，实现量值溯源是非常有必要的。
Digital watt-hour meter is the necessary equipment with increasingly wide application while it is necessary realization of quantity traceability.
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