8.The main difficulty on the study of aeroelasticity lies in the effects of unsteady separation, shock and viscosity to the stall flutter.
振荡叶栅的非定常分 、效应和跨音激波对失速颤振的影响成为当前气动弹力学的 主要难点。
9.Second jobs were a more common occurrence in those sepia-tinged pre-Premier League days — Neil Warnock, for example, as well as being a trained chiropodist, also ran a fruit and veg stall.
10.Ironically, even as the government was fulminating against American policy, American jeans and videocassettes were the hottest items in the stalls of the market, where the incongruity can be seen as an example of human inconsistency.