可以考慮做速度計Calibration。可能許用誤差通常在5%。
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a systematic 5% off will be a big deal
-lovecorn-
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11/19/2010 postreply
23:02:46
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As of 97, Federal standards in the United States allowed a maxim
-00zz7788-
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11/20/2010 postreply
12:18:07
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per "Auto Tutor", American Automobile Association of California
-00zz7788-
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11/20/2010 postreply
12:21:46