A coasting performance test is simulated on a chassis dynamometer, the transmission resistance, rolling resistance of wheels and their speed factors are measured.
利用底盘测功机模拟道路滑行试验，测定出汽车的传动系阻力、轮胎滚动阻力及它们的速度影响系数。
By use of the reverse? Drive test on a chassis dynamometer, the transmission resistance is measured, and the model of the transmission resistance is established.
利用底盘测功机反拖测试汽车的传动系阻力，建立传动系阻力的数学模型。
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