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forward facing
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  “forward facing”译为未确定词的双语例句
     IMO Looks Back and Forward,Facing 2000
     IMO在世纪之交的回顾与展望
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     Numerical investigation on drag and heat-transfer reduction using 2-D planar and axisymmetrical forward facing jet
     利用二维平面和轴对称逆向喷流减阻和降低热流的计算研究
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     A parallel data mining architecture is put forward, facing to business intelligence and having higher data mining efficiency.
     提出了一个面向商业智能的、具有较高数据挖掘效率的并行数据挖掘体系结构。
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     At last, on the basis of synthetic analysis, countermeasures are put forward facing up to the problems existing in the land readjustment of Baoding.
     最后,在综合分析的基础上针对保定市土地整理中存在的问题,提出了相应的措施建议。
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     Enterprise development strategy is stated in details, especially over-sea development strategy, low-cost strategy, human resources strategy, substantial energy strategy, putting forward facing questions of China National Offshore Oil Corp.
     详细介绍了中国海洋石油总公司的企业发展战略,尤其是海外发展战略、中下游发展战略、低成本战略、人才战略和替代能源战略。
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  相似匹配句对
     Study on Facing-Forward Simulation of Electric Vehicle
     电动汽车前向仿真研究
短句来源
     IMO Looks Back and Forward,Facing 2000
     IMO在世纪之交的回顾与展望
短句来源
     Leap-forward
     跨越式发展——2003年系统工作会议综述
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     Facing WTO
     直面WTO
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     Facing Management
     面向管理
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  forward facing
They are a quasi-2D Riemann problem, the double-Mach reflection problem, the forward facing step problem, and two shock wave and bubble interaction problems.
      
When the oncoming fly approached a forward facing host, more planidia were found in the arena's center (i.e., closer to the host) than in the no-host or rearward-facing host treatment.
      
It is observed that the third shock wave is forward facing.
      
The most'robust' algorithm was used to process 3D PTV data, which were obtained from measurements of a separating flow in a forward facing step configuration.
      
Experimental investigation of drag reduction by forward facing high speed gas jet for a large angle blunt cone at Mach 8
      
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Wall heat transfer fluctuations have been measured using a platinum film resistance thermometer in forward facing steps induced shock wave and turbulent boundary layer interaction fields.The nominal test conditions were a freestream Mach number of 7.8 and a unit Reynolds number of 3.5×107m-1 Mean and fluctuating heat transfer distributions in the interaction region are presented.The results show that the shock wave structure is unsteady in shock induced hypersonic turbulent separated flows,generating an...

Wall heat transfer fluctuations have been measured using a platinum film resistance thermometer in forward facing steps induced shock wave and turbulent boundary layer interaction fields.The nominal test conditions were a freestream Mach number of 7.8 and a unit Reynolds number of 3.5×107m-1 Mean and fluctuating heat transfer distributions in the interaction region are presented.The results show that the shock wave structure is unsteady in shock induced hypersonic turbulent separated flows,generating an intermittent region.The mean wall heat transfers in this region result from the superposition of relatively low frequency,large amplitude heat transfer fluctuations on the heat transfer signal of the undisturbed turbulent boundary layer.There is a maximum value of aqw/qw in the intermittent region.The maximum value and the length scale of intermittent region were found to increase with increasingly stronger interactions.

用铂膜电阻温度计测量了前向台阶诱导激波与湍流边界层相互作用流场中的表面热流率脉动。试验条件是:自由流马赫数为7.8,单位长度雷诺数为3.5×10~7米~(-1)。给出相互作用区平均热流率和脉动热流率分布。结果表明:在激波诱导的高超音速湍流分离流中,激波结构是不稳定的,产生一个间歇区域。在间歇区中,表面平均热流率由未扰动湍流边界层的热流信号和低频高幅热流脉动迭加而成,出现一个极大值。相互作用愈强,愈大,间歇区域愈长。

The active control of separated flows in turbulent boundary layers was achieved experimentally using self-excited oscillations of a steel wire inside the separated zone of a forward facing step. The geo-metric location of steel wire is critical. The present study shows that the control of separation can only be achieved when the steel wire is placed near the point of separation about which the local natural vortex, inter-acts with the steel wire, would resonate it causing strong local vibrations under...

The active control of separated flows in turbulent boundary layers was achieved experimentally using self-excited oscillations of a steel wire inside the separated zone of a forward facing step. The geo-metric location of steel wire is critical. The present study shows that the control of separation can only be achieved when the steel wire is placed near the point of separation about which the local natural vortex, inter-acts with the steel wire, would resonate it causing strong local vibrations under the inherent frequency of the wire. The shedding frequencies of the vortex will then adjust to that frequency, amplified by it, forming large coherent structures and resulting in dramatic shortenning of the separa-tion bubble.

本文用实验方法探讨了非定常扰动对前台阶湍流分离的影响。研究表明采用钢丝为非定常扰源,则不用外加机械能就可达到控制分离的目的。该方法可行的关键在于将钢丝置于分离点后的一个邻域内,在该邻域所特有的自然非稳定涡结构的作用下,钢丝会产生共振,这种共振效应使下泻涡得以强化并形成大尺度的凝聚结构,进而给分离包的低能区补充了能量,使分离包大大缩短。

An experimental study of heat transfer in turbulent separated flow over a forward facing step is reported in this paper.The present work deals with a quite small forward facing step model (step height H=4 0mm),therefore a special technique that can change the relative locations of heat flux gauge from the step is applied successfully. The investigation is focused on two recirculation zones.Measurements of heat transfer are...

An experimental study of heat transfer in turbulent separated flow over a forward facing step is reported in this paper.The present work deals with a quite small forward facing step model (step height H=4 0mm),therefore a special technique that can change the relative locations of heat flux gauge from the step is applied successfully. The investigation is focused on two recirculation zones.Measurements of heat transfer are performed in Ludwieg Wind Tunnel by the transient technique,which demonstrates a new method of experimental research in this field.Within the range of Reynolds number 11800 to 32200,the distribution of wall heat flux and the distribution of Nusselt number are obtained.Those distributions show that the heat transfer coefficient increases to the first maximum value near the step in the front recirculation zone and the second maximum occurs at the reattachment point in the downstream recirculation zone where this point is fixed roughly at X/H=2 5 for the five different Reynolds numbers.The second maximum is larger than the first for same Reynolds number.At last a correlative equation between Reynolds and Nusselt numbers is presented.

本文尝试用瞬态实验方法 ,在卢德威格风洞实验台上 ,对小台阶高度 ( H=4 .0 mm)的前台阶二维流场进行传热实验研究 ,测定了当雷诺数为 1180 0至 32 2 0 0时的流场内热流通量和努谢尔特数的变化规律以及努谢尔特数随雷诺数变化的准则关系式。实验结果是令人满意的。

 
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