喷流

But the question is, does this happen to every single jet or active nucleus, or are we seeing some odd behavior from M87?

但问题是，这仅仅是M87过去的行为还是它将会发生在每个活动星系核或者单个喷流中？

At first, I will introduce the principle of the supersonic airflow tunnel and give the construction of the pipe.

首先，本文将概述超音速喷流实验台的基本原理，对整体结构的选择进行简要的说明。

Disturb gush flows can effective ground is revulsive all round dormant air, and drive airiness.

扰动喷流可以有用地诱使四周一动不动的空气air，而拉动空气air流转。

Then the muzzle flowfield with muzzle brake was simulated with the aforementioned experience. Those complex phenomena including precursor shock caused by quickly moving of projectile, muzzle flow structure produced by propellant gases, affection of blast wave behind muzzle area which formed by leading angle of muzzle brake, etc, can be observed clearly by these simulations.

同时藉由此经验，模拟含炮口制退器之炮口流场，获得炮管内因弹体高速移动产生之先导震波现象、高温高压之发射药气体於炮口形成之喷流结构及制退器排气导孔对后方震波压力传导之效应等良好结果。

The ejective flow produced by attitude control engine creates serious contamination to spacecraft, which can be classified, according to property, into mechanical,thermal, depository and chemical contamination.

姿控发动机真空环境下工作产生的喷流对航天器造成的污染非常严重。根据污染的性质，羽流污染又分为机械污染、热污染、沉积污染和化学污染。

The first step of simulation method is to establish the one-dimension parabolic partial differential advection diffusion equation that was used to describe the mass transportation model of air-pollution distribution as a block program model of the controllable plant. Then, applying the Fuzzy logic theory to operate tunnel jet-fans and control the tunnel wind quantity and adjust the wind average velocity would not let the air-pollution concentration over the standard safety value too much.

模拟方式首先将常被用以表示隧道内空气污染物质传理论模式之一维向平流扩散抛物线型偏微分方程式建构成一组可控制对象的方块程式模拟模型，再运用模糊逻辑理论模拟控制喷流式通风机之运转风量来调节隧道内平均风速以控制隧道内空气污染物浓度不至於高过标准安全值太多。

As the modern astronomical observational technique with the highest resolution, VLBI can provide key contribution to the study of relativistic jets structure, superluminal motion and bending jet of γ-ray AGNs. It is helpful to discover the relationship between γ-ray and radio emission of them.

VLBI技术是现代天文观测中能获得最高分辨本领的观测手段，利用VLBI技术对γ-ray AGNs的相对论射电喷流结构、视超光速运动和喷流的弯曲进行研究，将有助于我们探索该类源的γ-ray和射电辐射的关系。

The results show that the ratio of jet velocity to free flow velocity affects the location of vortex breakdown.

结果表明，后缘喷流速度与自由来流速度之比影响前缘涡破裂的位置。

Comparison with nonspinning case shows spinning changes the flow structure and base flow of projectile with lateral jets.

与无旋转情况对比表明，旋转对弹丸侧喷流以及底部流动均有影响，高速旋转导致侧喷射流向旋转来流方向倾斜，并减弱其对弹底流动的引射。

The maximum intensity area of jet noise is the flow space formed by the through-boll of ball valve and channel of valve casing.

球阀通孔与阀体通道形成的过流空间是喷流噪声最强的区域。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。