Styled with distinctively rounded edges so as to reduce wind drag and thereby increase fuel efficiency . used especially of automobiles and vans 流线型的具有独特圆边款式以减少风阻从而提高燃料效率的，用以特指汽车或轻型汽车的款式
2.
The main results are as follows : 1 ) it is a obvious effect of wave on the wind drag coefficient . the wind drag coefficient can be add up to 1 . 5 times of origin value when we consider the wave effect on the drag coefficient . it also has changed the sea level 主要成果如下： 1 、波浪对表面拖曳系数的影响是明显的，特别是在浪大的时候，拖曳系数可以增大到原来的1 . 5倍；拖曳系数的改变也改变了水位场，在a点引起的增水量级值得人们注意。
