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• It is very important to reduce the aerodynamic drag and noise for traveling vehicles.

减低汽车行驶中的空气阻力、抑制其行驶时的气动噪声具有十分重要的意义。

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• To decrease aerodynamic drag, it is important to improve aerodynamic contour of train.

为了减小空气阻力列车车厢气动外形研究变得愈加重要

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• The mechanism of reducing aerodynamic drag by acoustic excitation was briefly analyzed.

本文首先简要地分析了激励机理

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• The mechanism of reducing aerodynamic drag by acoustic excitation was briefly analysed.

本文首先简要地分析了激励机理

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• It is shown that the technique can obviously reduce the aerodynamic drag coefficient of the model.

结果表明：内部声激励能够明显地降低车身模型空气阻力系数

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• Using characteristics of plasma to reduce aerodynamic drag of vehicles is a new concept of reducing drag.

利用等离子体特性减小飞行器气动阻力一种概念思路。

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• The order of total slenderness ratios of the five trains is as same as that of aerodynamic drag coefficients.

计算得到不同流线型列车整体大小排序与其气动阻力系数排序完全一致

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• By extending length of the test floor properly, the aerodynamic drag coefficient can be measured more precisely.

适当延长地板提高气动阻力系数测量精度

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• The aerodynamic drag of different models at zero angle of attack in the experiment is calculated using the simplified procedure.

实验不同模型空气动力阻力采用简化方法来计算的；

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• The numerical simulation research on aerodynamic drag of train affected by the train windshield configuration is performed in this paper.

采用数值模拟方法研究列车风挡空气阻力影响

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• On the highway the order is reversed: aerodynamic drag, which increases at an increasing rate with speed requires the most energy (about 10.9%).

高速公路上，顺序正好相反：速度程指数增长的空气阻力占用最多的能量(约10.9%)。

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• The relationship between airflow characteristics and aerodynamic drag and the variation of aerodynamic drag with basic structural parameters were obtained.

揭示气流流动特性厢式货车气动阻力特性之间关系；厢式货车基本结构参数变化时阻力特性的变化规律。

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• The 12.6% of original fuel energy that makes it to the wheels must provide acceleration (5.8 %) and overcome aerodynamic drag (2.6%) and rolling resistance.

传到车轮12.6%能量必需提供车辆加速(5.8%)、克服空气阻力(2.5%)克服滚动阻力

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• Then compute aerodynamic drag of high temperature particle at different temperature difference and fit the formula according to the computational data points.

计算颗粒气体不同温差情况下高温颗粒气动阻力，并根据计算数据拟合计算公式

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• It is very complex to calculate the aerodynamic drag of high-speed train running in railway tunnel with multi -shafts. And the difficulty is to calculate the velocity of piston wind.

高速列车空气阻力计算中，竖井隧道列车空气阻力计算比较复杂，其难点在于多竖井活塞风计算。

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• The aerodynamic shape design of train head should consider all kinds of factors because the relation between reducing aerodynamic drag and air pressure pulse may be conflictive and uniform.

减小列车空气阻力降低列车交会压力波，既矛盾又统一，列车气动头部外形设计需要综合考虑各种因素

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• 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.

研究太阳帆板地面展开试验气动阻力影响基于网格技术提出了一种时变空气阻力计算方法

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• At altitude, the air pressure is lower, and so are aerodynamic effects such as drag and lift, ultimately causing balls to travel faster and straighter than they would at lower altitude.

由于地处海拔地区，气压因而作用上的阻力升力所产生的空气动力效应会发生相应反应，最终导致空中飞行速度在低海拔地区快，飞行的路线也更

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• If you keep your Windows up your car will be subject to less drag, which improves the aerodynamic profile of the vehicle.

如果，根据车辆空气动力学外形，你的阻力较少

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• Increasing the lift drag ratio of turbine blade is an effective way for improving turbines aerodynamic characteristics.

提高叶轮机械叶片改进叶轮机械气动性能重要途径。

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• This also optimizes wing shape and reduces the potential need for bulging aerodynamic surfaces, which in turn reduces drag and increases airplane performance.

这些优势有助于优化大翼外形减少气动表，从而减小阻力提高飞机的性能。

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• The change rules of aerodynamic parameters including lift coefficient, drag coefficient and pitch moment coefficient have been analyzed when Angle of attack and fuel flow rate is changed.

考虑了不同飞行不同燃料气动参数包括升力系数阻力系数俯仰力矩系数变化规律

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• The working principle of the plant and the relation between the aerodynamic force and the drag of water lifting are discussed.

文中分析了装置工作原理气动力提水阻力关系

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• The experimental results of the effect of base bleed propellant composition on the aerodynamic performance of drag reduction and range increase of base bleed projectile.

介绍了底排药剂成份排弹减阻增程气动力性能影响实验结果

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• The result is the five metre long aerodynamic satellite equipped with low power ion thrusters to compensate for atmospheric drag.

结果5长的空气动力卫星配备功耗离子推进器补偿大气阻力

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• Calculate the lift and drag over simple aerodynamic shapes in compressible, inviscid flows.

能估算可压缩无粘基本空气动力外形升力阻力

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• Compared with the fin without bulges, the aerodynamic characteristics of the a fin with a bulge are changed, especially for the drag.

鼓包比较带有鼓包的气动特性尤其是阻力有所变化

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• Also the effect of different ice shapes on lift and drag coefficient were assessed. The results indicate that the glaze ice has the most adverse impact on airfoil aerodynamic performance.

另外还计算不同机翼阻力影响结果表明瘤状冰对机翼气动特性影响最大

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• The unique aim of aerodynamic designer is always to enhance lift coefficient and reduce drag coefficient.

一直空气动力设计工作者追求目标

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• The unique aim of aerodynamic designer is always to enhance lift coefficient and reduce drag coefficient.

一直空气动力设计工作者追求目标

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