The mass ratio and free stream turbulence have attained to considerably good level.
引射效率和气流的湍流度也达到相当好的水平。
For high levels of free-stream turbulence, streaky structures in boundary layer with the spanwise variations alternating will be generated.
对背景湍流度很大的流动，边界层中有时会产生沿展向周期分布的流向速度的条纹结构。
Meanwhile, the stream turbulence effects on the measurement are studied. Finally, the problems which must be researched further are presented for indicating boundary-layer transition.
本文同时还研究了气流湍流度对测量方法的影响，最后提出转捩测量技术尚需进一步研讨的问题。
To suggest that a young writer not swim in the main stream of this turbulence would be foolish indeed, and such is not the intent of these cautionary remarks.
建议青年作家不在汹涌的主流中游泳是愚蠢的，而这并不是告诫的意图。
It’s like a fast-moving river current versus the gurgling turbulence of a shallow stream.
“这就像一个快速移动的河流”。
The easiest place to look for turbulence is in the stream of steam rising from a boiling teakettle.
寻找湍流最方便的场合莫过于烧开的茶水壶冒起的蒸汽流了。
The results show that the inhomogeneous distribution of temperature advection in upper jet stream trigger vertical currents in the marginal area of upper jet stream and cause airplane turbulence.
结果表明，高空急流区温度平流分布的不均匀性，会在急流附近等温线密集区边缘激发出空气垂直运动和湍流，引起飞机颠簸。
By using dynamical analysis technique and combining with observational facts of airplane turbulence, a formation mechanism on airplane turbulence in upper jet stream is studied.
作者应用动力学分析方法，结合观测飞机颠簸的事实，对高空急流区飞机颠簸的一种形成机理进行了理论探讨。
The air stream breaks up into turbulence, the excess energy is absorbed by the turbulent eddies and this energy is irrecoverable. This is where the majority of the energy is wasted.
气流会分散形成涡流，涡流吸收多余的能量，而这种能量是不能恢复的，能量的大部分就消耗在这里。
The air stream breaks up into turbulence, the excess energy is absorbed by the turbulent eddies and this energy is irrecoverable. This is where the majority of the energy is wasted.
气流会分散形成涡流，涡流吸收多余的能量，而这种能量是不能恢复的，能量的大部分就消耗在这里。
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