erratic和confound Unknown 2009/03/24

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The instantaneous fuel level is not represented on the fuel gauge.  A PCM calibration filters out the effects of fuel slosh and other erratic movements of the float.  Most vehicle programs utilize two filters:  A “Fast Filter” is used when the transmission is in Park or Neutral so that the effects of a customer fill immediately show on the gauge.  A “Slow Filter” is used when the vehicle is moving, so that the effects of fuel slosh or temporary level distortions do not confound the gauge reading.  

erratic adj.漂乎不定,不稳定的

confound v.使…困惑

顺便大致翻译一下:瞬时的油位不会立即反映在油表上。PCM标定会滤除fuel slosh因素及浮子的不稳定波动因素。大多数车型都有两种滤波:有一种是Fast Filter(当变速箱处于P档或N档时),用于显示加油时能立即显示液位。另一种是Slow Filter(当车辆在运行时),fuel slosh或瞬时液位变化不会影响到油表读数。

通过这个例子,记一下这两个词吧:erratic和confound。

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