可以考慮做速度計Calibration。可能許用誤差通常在5%。
所有跟帖:
• a systematic 5% off will be a big deal -lovecorn- ♂ (0 bytes) () 11/19/2010 postreply 23:02:46
• As of 97, Federal standards in the United States allowed a maxim -00zz7788- ♂ (186 bytes) () 11/20/2010 postreply 12:18:07
• per "Auto Tutor", American Automobile Association of California -00zz7788- ♂ (94 bytes) () 11/20/2010 postreply 12:21:46