head-drag coefficient的意思|示意

Drag of the train head is obtained by the method of surface integral and drag coefficient can be computed at the same time.

通过表面积分的方法得到各种列车车头的阻力，进而计算得到了车头模型的阻力系数。

A series of train heads is obtained by changing the rate of length and width of a certain train head, in order to know if the rate will affect the drag coefficient.

对于同一种车型改变了它的细长度得到一系列车头模型，分析计算了细长度对车头阻力系数的影响。