The small wheels hidden underneath the vehicle 's aerodynamic shape are able to rotate 180 degrees .
小型轮胎隐藏在符合空气动力学的整车外壳下，能实现180度旋转。
Gliding distance is an imperfect measure of an airliner 's aerodynamic efficiency , since it is not designed for gliding .
其实滑翔距离并不能作为客机气动效率的评价手段，因为这不是它的设计初衷。
Until recently , however , their use has been confined to projects such as refining the aerodynamic profiles of car bodies , aircraft fuselages and wings .
It does not refer to the lack of weight under gravity experienced in free fall or orbit , or to balancing the force of gravity with some other force , such as electromagnetism or aerodynamic lift .
