The car real driving cycle usually is a velocity-timecurve based on times.
乘用车实际行驶工况通常可表示为基于时间的一段时间-速度曲线。
2
If you were thinking of a velocity field, that would measure how much fluid is passing through the curve in unit time.
想象一个速度场，它能够度量，单位时间内流体的量。
3
The curve of evapotranspiration is the typical unimodal sort, but for the difference with the amplitude , velocity , the size and time of the maximum evapotranspiration.