Grief, horror, relief-they fluttered in her mind like birds, none of them willing to settle . 悲伤、恐惧、解脱好象三只鸟，在她脑海里鼓翼飞翔，谁也不肯安顿下来。
The wake survey cannot be used to measure the drag of stalled airfoil or of airfoils with flaps down . 尾流测量不能用来测量失连状态下的冀型或襟翼偏转后的翼型阻力。
Mounting the panel model on a short strut has the advantage of decreasing the tare drag of the setup . 把翼段模型安装在一个短支柱上，其优点是减少了安装支架的阻力。
Soaring birds and gliding wings were keys to the design of the first successful human-powered aircraft . 翱翔着的飞鸟和滑翔用的伞翼，是这架空前成功的人力飞机设计之关键。
The initial retrofit consisted of removing the gaps between the stringer flange and floor beam by providing shims . 最初的修复工作是通过垫片来消除纵梁翼缘和横梁之间的间隙。
The helicopter, which was suggested by leonardo da vinci some four hundred years ago is a rotating wing device . 直升飞机是大约400年前伦纳德达文奇曾提出的一种旋翼装置。
The second crack is a crack originating at the groove weld toe of the column flange-girder flange connection . 第二种是产生于立柱翼缘与主梁翼缘连接处的坡口焊缝焊趾处的裂纹。
The crack surfaces in the web and flange were subjected to visual examination in order to evaluate crack growth regions . 为了估计各裂纹扩展区，对翼缘和腹板的裂纹表面进行了宏观检验。
The behavior and performance of the cracked flange plates suggest that good levels of fracture toughness exist in the a 517 steel . 开裂的翼缘板的性能及使用状态说明A517钢的断裂韧性良好。
The delta-winged columbia, before reaching the orbit, jettisoned its dual booster rockets two minutes into flight . 三角翼的哥伦比亚号航天飞机在进入轨道前，起飞两分钟就抛下其两个助推火箭。
