variable density tunnel 变密度风洞
high-density tunnel 高密度风洞
variable-density tunnel 变密度风洞
low density wind tunnel [航] 低密度风洞
Density measurement in the tunnel 隧道内的密度测量装置
low-density wind tunnel 低密度风洞
density wind tunnel 密度风洞
high-density wind tunnel 高密度风洞
variable-density wind tunnel [航] 变密度风洞
Suffice it to say that the fresh air required to control pollution levels in a tunnel increases erratically with vehicle speed and traffic density and the design year is important.
这足以说明，由于车辆速度及交通密度的影响，用于控制隧道中污染水平的所需新鲜空气会不规则的增长，且设计年也很重要。
The tests were carried out in a constant volume tunnel in which the flow velocity, the environmental density and its temperature can be changed.
试验在专门研制的可变流场速度、可变环境密度和可变环境温度的定容风洞中进行。
The paper is based upon Aero-Optics theory, pursuing the methods and realization for measuring the density distribution of transient flow field in wind tunnel test.
本论文基于气动光学理论，研究在流场试验中检测高速瞬态流场密度分布的方法与实现。
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