查询词典 vortex ring

Consider a circular vortex ring of radius R.

考虑半径为R的涡旋环。

With random disturbances on the inlet of the jet, axisymmetric instability appears firstly and then the large coherent structure—vortex ring is formed.

在模拟自然射流的随机扰动的条件下，射流首先出现轴对称失稳，形成大尺度拟序结构一涡环。

In the vortex-ring gait, lift is produced only during the downstroke, providing positive upward force and forward thrust.

在涡环的步态，升降机，是生产只有在downstroke ，提供积极向上的力量和前进推力。

Numerical simulation of motion and bubble entrainment of vortex ring［J］.

涡环发展及其与气泡相互作用的数值模拟［J］。

A circular vortex ring of about one mile in diameter extends down through what would otherwise be water and into an opening into Telos and the Agartha Network.

一个直径约一英里的圆形涡环向下延伸，要不然水会进入Telos和Agartha 网格。

The interactions between the shock wave and vortex ring are discussed.

在此基础上，考察了不同出口形状对爆轰波溢出后的外流场的动力学演变规律的影响，分析讨论了涡环与激波的相互作用过程。

Vortex ring generators have been invented that project stable doughnut-shaped clouds of smoke for long distances.

涡环发电机已发明了这一项目稳定的甜甜圈状云烟雾，为长途跋涉。

The computed results also confirm that the streamwise vorticity pairs together with the vortex ring contribute to the formation of the side jet.

数值模拟结果还证实，流动中出现的侧向射流的形成机理要受到流向涡对和涡环的共同作用。

The PIV measurement results show the properties and structures of the unsteady flow field in which a train of vortex ring s are formed at the sharp edge of the orifice, thus the energy and mass flux are .

通过对射流出口涡环的产生、发展及运动特性的分析，认识到涡环之间相互作用是形成&零质量&射流的流动机理。

In the future, some issues need to be investigated further, which include: establish and study the low-dimensional dynamical system of turbulent jet, with the POD bases, the control of turbulent jet based on the low-dimensional dynamical system of turbulent jet, investigate the physics mechanism of intermittence shed-off of the vortex ring in turbulent jets in crossflow.

有待进一步研究的问题是：建立基于POD模的湍流射流低维动力系统，并对其进行分析；研究基于湍流射流低维动力系统的湍流射流控制；探讨湍流横向射流中涡环间歇脱落的物理机制。

I'm strongly against the death penalty — it's an eye for an eye.

我不赞成死刑——这是以牙还牙的报复行为。

And to get you the support you need, we're enlisting all elements of our national power: our diplomacy and development, our economic might and our moral suasion, so that you and the rest of our military do not bear the burden of our security alone.

并给你们所须的支援，我们正徵召国家所有各种的力量：我们的外交及发展，我们的经济力量与道德劝说，所以你们与其他军人不须要孤独地负起国家安全的责任。