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In this paper, effects of atmospheric factors to ka-band earth-space links are analyzed, and the total fade distribution function is derived. with the scintillation prediction model, monthly averaged standard deviations and monthly percentage time averaged fade of scintillations for some of referential earth stations of our country are computed.

本文分析了各气象因素对ka-波段地空链路衰减特性的影响，得出了链路综合衰减分布函数，利用闪烁预测模型计算了全国各参考站点的闪烁月平均标准偏差和月百分比时间平均衰减值。

In this paper, effects of atmospheric factors to Ka-Band earth-space links are analyzed, and the total fade distribution function is derived. With the scintillation prediction model, monthly averaged standard deviations and monthly percentage time averaged fade of scintillations for some of referential earth stations of our country are computed.

摘要本文了各气象因素对Ka-波段地空链路衰减特性的，得出了链路综合衰减分布函数，利用闪烁预测模型了全国各站点的闪烁月平均标准偏差和月百分比时间平均衰减值。

With the scintillation prediction model, monthly averaged standard deviations and monthly percentage time averaged fade of scintillations for some of referential earth stations of our country are computed.

本文分析了各气象因素对Ka-波段地空链路衰减特性的影响，得出了链路综合衰减分布函数，利用闪烁预测模型计算了全国各参考站点的闪烁月平均标准偏差和月百分比时间平均衰减值。

On the other hand, radionuclide myocardial perfusion imaging using single-photon computed tomography is a well established modality for the functional assessment of coronary artery disease.

相反的，同位素心肌血流单光子断层造影在冠状动脉疾病功能面的评估的效益则已是众所公认的。

By using a finite volume method to solve the Navier-Stokes equations, twodimensional vibrating cascade flow was computed.

采用有限体积法求解Navier-Stokes方程，完成了二维振动叶栅流动数值模拟。

The flow field of crossing shock waves/turbulence boundary layer caused by 7°×11° double sharp fins was computed with Navier-Stokes equations and five turbulence models.

针对7°×11°双尖鳍外形的非对称交叉激波与湍流边界层相互作用，采用Navier-Stokes方程和5种湍流模型进行了计算。

The video sequences are captured by the fixed cameras under various illumination conditions of indoor and outdoor scenes. By appropriately choosing the comparative sequences, the grey relational degree between them and the present frame is computed and moving targets are viably detected.

在室内和室外不同光照场景下，通过固定摄像机捕获的视频图像序列中的运动车体和人体进行检测；选取适当的比较图像序列，对该序列和含有运动目标的视频图像作灰关联分析，以清楚、完整地提取出运动目标。

Firstly,we generated two depth buffers for occluder and receiver,discretizing the occluder to micro-patches;then,we calculated the depth value of shadow for each micro-patch and estimated the visibilities of them;finally,we computed penumbra extent for each micro-patch and projected soft shadow map on the scene to obtain real-time soft shadows.

首先为场景中遮挡物、接收面计算深度缓存，并离散遮挡物成许多微面；接着计算每个微面的阴影深度值，估计微面的可见度；最后计算微面半影范围，将软阴影图投影回场景中，得到实时软阴影。

Firstly, the protection of direct lighting about traction substation is discussed. Secondly the excessive voltage made by wave of lighting is analyzed and some advices is given for it .Then a actual traction substation is computed and analyzed about it's excessive voltage, some problem should be considered in-depth are put out. At last , dependability of the measure of protection against lighting in this paper is analyzed.

首先研究了牵引变电所的直击雷保护，接着对雷电侵入波过电压进行了分析，并提出了雷电侵入波保护措施，然后以一个实际的牵引变电所为例对雷电侵入波过电压进行了计算和分析，并进一步指出了计算中应进一步考虑的若干问题，最后对本文提到的防雷措施的可靠性进行了综合的分析。

FEMUR HEAD NECROSIS/diag. TOMOGRAPHY ; X-RAY COMPUTED

股骨头坏死／诊断；断层摄影术； X线计算机

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