尾流

We have developed many kinds of optical methods to measure the insect flight. For example, a beating force measurement method reduces the uncertainty caused by air turbulence; a flow measurement using a frame straddling technique decreases the interval between exposures of the flow;extracting the weak distorted fringes on the dragonfly wing by a correlation algorithm; measuring the camber deformation of a dragonfly wing using projected comb fringe without hypothesizing that the wing is a rigid plate. By measuring the beating force, wing kinematics and flow, simutantously, we can analyze the relationship among many flight parameters.

本研究针对昆虫运动的特点，研究开发了测量昆虫运动，特别是自由飞行昆虫运动的光学方法，包括：风洞中扇翅力的测量，解决高灵敏度光学测量的抗干扰问题；帧头帧尾流场测量方法，解决由CCD拍摄帧频导致的测量速度低的问题；调制相关算法，解决透明翅膀上散射光较弱问题；梳状条纹投影法，解决翅膀弓形变形测量问题，不需要以往的翅膀刚性平板或刚性条杆假设；多参数的综合测量，解决各参数间的相位匹配问题。

As prefigures possibly a saturation of the enhancement of bubble film.

散射光照度一定周期性的规律，说明随着航速的增大，尾流气泡幕逐渐增强，气泡幕中气泡密度、不同直径气泡分布等均随之变化，这可能预示着气泡幕的增强存在饱和度。

Bubble film builds up gradually,the thickness and distribution with diameters and etc change,along with the increasing of the speed of ship,based on the periodicity of scattered light illumination.As prefigures possibly a saturation of the enhancement of bubble film.

散射光照度一定周期性的规律，说明随着航速的增大，尾流气泡幕逐渐增强，气泡幕中气泡密度、不同直径气泡分布等均随之变化，这可能预示着气泡幕的增强存在饱和度。

Thus, the response of each harmonic can be calculated first, and then the whole response can be achieved by superimposing the responses of all harmonics.

从流场求解到响应求解，为工程应用初步建立起了一个尾流激振情况下叶片振动应力预估的半经验方法。

As such the mechanism of particle transfer in a fully developed wake can be explained as: move around vortexes and forward with wake flow.

因此粒子在充分发展尾流中的运动可以描述为：一边绕涡团运动，一边随涡团向尾部运动。

In the modeling of flight simulation, a six-degree-of-freedom whole non-linear equation and wind-tunnel tests data of MAV are used, the propeller twist and induced air flow on MAV are took into account.

在飞行动力学和运动学仿真中，采用了六自由度全量非线性方程，以微型飞行器的风洞吹风实验数据为依据，考虑了螺旋桨的气动扭矩、陀螺力矩和尾流对微型飞行器的影响，精确地反映了微型飞行器的实际运动特性。

Remember that the drafting car will brake with difficulty.

记住吃你尾流的车子刹车比较困难。

While the stable viscous incompressible flow cross through a single circular cylinder, it always result in the separated streaming and unsteady vortex streaming generated behind the circular cylinder.

当均匀稳态不可压缩黏性流体通过单一圆柱时，常在圆柱两侧产生分离流动，并在后方形成非稳态尾流。

The rotor down-wash flow field was calculated using generalized down-wash flow model.

结合动量理论和涡流理论，推导了桨叶环量方程，用广义尾流模型计算了旋翼下洗+流场。

For aero-optic problem, however, even in the case of relatively slow (0m/s) turbulent flow, a minimum wave-front-sensor bandwidth of approximately 2kHZ. For aberrating flow fields associated with airborne optical system, bandwidth ranging from 30 to 100kHZ are needed.

气动光学则通常与光通过湍流剪切层等一类问题相关，例如机载光学成像系统、光学制导系统等，发射或者接收的光都必须通过飞行器表面由于飞行所形成的剪切层或者飞机尾流。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了