To study the effect of aerodynamic drag in the solar array spreading on the ground, a calculation method of time-varying aerodynamic drag was put forward based on dynamic meshes in this paper.
为研究太阳帆板地面展开试验中气动阻力的影响，基于动网格技术提出了一种时变空气阻力计算方法。
2
Modern Web sites are highly interactive: Dynamic navigation menus, image rollovers, forms, and even drag and drop are available.
现代的网站是高度交互的：动态的导航菜单、图像切换、表单，甚至还支持拖拉操作。
3
This implies that the creation and destruction of CTabFolder composites is dynamic, in turn, implying that the creation of a drag source for CTabFolder composite should be done dynamically.