在以往的间冰期中,当冰川消退时,它们在尾迹中留下了开阔的土地。
During previous interglacial periods, when glaciers retreated, they left behind open land in their wakes.
转子转动时会产生紊流,就像快艇的发动机产生的尾迹。
As the rotors turn, they generate turbulence, like the wake of a speedboat motor.
流星尾迹和教堂塔尖都指向北极星,真是美不胜收。
Contributing to the beautiful composition, meteor streak and church apex both gesture toward the North Celestial Pole.
体现此效应的关键在于推出时变的尾迹弯曲参数KR。
The key to represent this effect is a time-accurate wake curvature parameter KR.
奥利弗(1942,1948)曾跟踪流星尾迹测量风。
Oliver (1942,1948) has followed meteor trails to measure winds.
星星渡船横过海港,留下的只是尾迹给我们带来的无穷幻想。
The Star Ferry makes its way across the harbor, leaving nothing but wonder in its wake.
这种尾迹特征同运动物体的参数和下潜的深度以及海况有关。
These features are various from different parameters of moving bodies, different depth of submergence and different sea-states.
给出了离心压缩机叶轮粘性尾迹速度亏缺值及尾迹宽度的计算方法。
The calculating method of viscous end speed defective value & end width for centrifugal compressor impeller is given.
同转子尾迹相比,转子叶尖泄漏涡对静子尖区的影响更为明显和深远。
The rotor tip leakage vortex has a stronger influence on the downstream endwall flow than the rotor wake.
然后在环量收敛与尾迹收敛的条件下,计算拉力以满足拉力收敛准则。
Then on the condition of circulation and wake geometry convergence, the rotor thrust is calculated to satisfy convergence criterion of thrust.
为减少尾迹数值耗散和便于添加上述边界条件,采用了嵌套网格方法。
Embedded grids are adopted to weaken the numerical diffusion of the wake and to apply the above boundary conditions.
在一定条件下,遥感图像上可以观测到舰船的尾迹或自然界的内波现象。
In some condition the wake of ship or the natural interwave can be observed in remote sensing imagery.
由实验结果可得到两种明显的尾迹涡结构、即射流尾迹涡和横流尾迹涡。
Two kinds of distinctive wake vortices were identified from the experimental results, namely the jet wake vortices and the crossflow wake vortices.
文中应用负射流理论解释三维计算中较大的数值粘性带来的尾迹偏移现象。
The negative eject theory is employed to explain the phenomena that the wake over-turn is due to large numerical viscosity.
他马上向天际望去,看到大群的小物体正在降落,尾部冒着烟划出一道尾迹。
Then he looked to the horizon and saw a swarm of small objects descending, trailing tails of smoke from behind, and he knew.
最后,连同通道区和尾迹区一起,求得了包括冲波影响的叶栅的总损失系数。
Finally, Over-all loss coefficients in the cascade are obtained, considering effects of the shock wave passage and wake.
对再入飞行器等离子体尾迹及其雷达散射特性进行了分析、研究和大量的计算。
In this paper, plasma wake flow of hypersonic reentry vehicle and radar scattering characteristics have been studied.
高时空分辨率的NPLS图像再现了激波、膨胀波、边界层及尾迹等流场结构。
NPLS images at high spatiotemporal resolution reveal shockwave, expansion wave, boundary layer and wake in the flow.
结果表明,无过载离心叶轮内部流动既没有出现分离,也没有明显的尾迹区存在。
The result shows that there exists neither flow separation nor apparent wake flow within an non-overload centrifugal impeller.
由转子尾迹特征参数和紊流度可以求出旋转叶栅损失,为修改设计提供参考依据。
The losses of the rotating cascade determined by the parameters of rotor wakes and the turbulence levels could be used in the design modification.
采用实验和数值计算相结合的方法,研究了非定常尾迹对叶片头部气膜冷却的影响。
Secondly, the effects of unsteady wakes on film cooling at the leading edge of blade were investigated by experiments and numerical simulations.
这个震荡称为雷射尾迹场,因为雷射脉冲的轨迹,就像机船在海面上所产生的船痕。
The oscillation is called a laser Wakefield because it trails the laser pulse like the wake produced by a motorboat.
由计算出的相位并根据弹道靶尾迹的一些常用模型公式,把相位转化为尾迹的电子密度。
We can get electron density with the calculated phase and some common model formula in the wake of hypervelocity projectiles.
上校和同事们谨慎地向晶体靠近,他们太空服上推进器的尾迹像条条蛛丝把晶体缠在正中。
The captain and his colleagues float close to the crystalloid carefully. The webby trails from their spacesuit are around the crystalloid in a mass.
同时,随着观测点在尾迹中的位置距目标船的接近,气泡密度不断增大,反射率也随之增强。
Besides, the bubble density and reflectance increased with the wake observation position approaching the target ship.
尾迹损失对叶轮机械的工作效率和运行稳定性有很大影响,也是叶轮机械主要的噪声源之一。
It has been found that wake loss of the blade has a great impact on the performance and stability of Turbomachinery, and also has been recognized as one of main noise sources of Turbomachinery.
实验结果表明:在转子尾迹的影响下,静子叶片表面的波动频率是转子的尾迹频率及其倍频。
Experimental results show that under the effect of the rotor wake, the dominant frequencies of pressure fluctuations on stator blades are the rotor blade passing frequency (BPF) and its harmonics.
联盟圣骑士现在免费获得粉红色的筋斗云,筋斗云在空中滑行并且留下充满闪光和花瓣的尾迹。
Alliance paladins will now receive, for free, a pink cloud to sit on that glides and leaves a trail of glitter and flowers.
对自由振动圆柱后尾迹中的湍流普朗特数进行了实验研究,并与刚性柱体尾迹的结果作了比较。
Turbulent Prandtl number of wakes generated by a free vibrating cylinder were investigated experimentally, and results were compared with those of rigid cylinder wakes.
用混沌动力学方法对多道扫描静电探针的离子饱和电流信号进行分析,研究了等离子体尾迹流场。
A plasma wake flow field is studied by analyzing the saturated ionic current of multiple scanning probes with the method of chaos dynamics.
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