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annulus drag coefficient [机] 环周阻力系数
Ratio of lift coefficient to drag coefficient. 升力系数与阻力系数的比值。
The drag coefficient varies with the shape of the object. 拖曳系数随物体的形状而异。
In many cases an overall drag coefficient is given so that the net force on the surface can be determined. 在许多情况下，总的拖曳系数是已知的，因而可以确定作用于表面上的净力值。
The lift and drag coefficient of flapping-wing MAV in different motion modes are calculated. 计算了扑翼微飞行器在不同运动模态下的升阻力系数;
The wave drag coefficient also increases with increasing upswept angle at transonic speed. 在跨音速时，波阻系数也与上翘角有关，上翘角增加会导致波阻系数进一步加大。
The friction drag coefficient increases with increasing afterbody fineness ratio and decreasing Reynolds Number. 后体摩擦阻力系数分别随后体的长细比的增加和雷诺数的减小而增加；
Canard wing increases lift coefficient with the penalty of the increase of drag coefficient. 低于主机翼的鸭翼将加强前掠翼布局的缓失速特性。
Such parameters of flow characteristics are investigated as lift and drag coefficient and vortex shedding frequencies. 计算了圆柱的升阻力系数、尾涡脱落+频率等描述绕流问题的主要参量。
Cavity length depth ratio strongly influences flow field、total pressure recovery、drag coefficient. 凹腔长深比对流场特性、总压恢复、燃烧室阻力影响显著。
Smoother vehicles may have drag coefficients of the order of 0.55. 光滑飞行器的阻力系数可能为0.;55量级。
The aerodynamic drag coefficient of a bus body model is measured in the wind tunnel with the acoustic excitation technique applied. 本文利用内部声激励技术,在风洞中对某厢式客车车身模型进行空气阻力系数的测试。
Ben designed the fairing shell to have a drag coefficient that would allow me to achieve at least 50 kph on less than 130 watts of power. 本设计的整流罩外壳有阻力系数，使我实现至少50公里不到130瓦的功率。
The streamlined shape of the vehicle to reduce drag coefficient, and the drag coefficient is the impact on vehicle fuel economy is an important factor. 流线型的外形能降低车辆的风阻系数，而风阻系数是影响到车辆燃油经济性的一个重要因素。
The triangular shaped body that is suggestive of motion is also functional, achieving a drag coefficient (Cd) value of 0.276 . 三角异形体是暗示性的议案，也是功能，实现了阻力系数（裁谈会）的价值0.;276。
Currently, the world's most aerodynamic car is the 2010 Mercedes-Benz E-Class Coupe , featuring a 0.24 drag coefficient. 目前，世界上最空气动力车是2010年奔驰E级轿跑车，具有0.;24风阻系数。
The results show that the airflow separate at the front part of bus,and induces the high drag coefficient of 0 666 5.The aerodynamic characteristic of JT6120 need improving. 研究结果表明由于在该车的头部产生了气流分离 ;导致空气阻力系数高达 0 .;6665;说明气动性能存在明显的不足;有必要进行改进
The results showed that the pressure drag coefficient increases rapidly with increasing upswept angle and contraction ratio respectively, and with decreasing forebody incidence. 研究结果表明，后体的压差阻力系数分别随上翘角、收缩比的增加及迎角的减小而明显增加；
The main parameters calibrated in the model are dispersion coefficient(a=0.07, b=0.7), roughness length(0.02m), wind drag coefficient(Cwd=3%), and evaporation rate(0.1/d). 经过率定后确定模型中主要参数值如下:扩散参数a=0.;07;扩散参数b=0
The new Audi A4L drag coefficient of 0.27, with the European version of the model line, Audi introduced a unique "forward front axle design" as long wheelbase 2869 mm. 全新奥迪A4L风阻系数为0．27，与欧洲版车型保持一致，采用了奥迪独有的“前轴前移设计”，轴距长达2869毫米。