The object of measuring velocity distribution is to show the characteristics of turbulent flow velocity field in recoil mechanism, so as to make some Suggestions for the design of recoil mechanism.

测试驻退机湍流速度场的目的是逐步揭示驻退机内湍流流场的结构和特点，为驻退机的设计和改进提供一些有益的参考。

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Mean velocity profile, turbulence intensity profile, integral scale and wind spectra are the most fundamental characteristics that describe the atmospheric turbulent boundary layer flow.

平均速度剖面，湍流度剖面，积分尺度和风谱是反映大气湍流边界层流动的四个最基本的因素。

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Threaded seat rings for valves in services with high velocity turbulent flow or thermal cycling should be lock welded to the body to avoid loosening. Please specify.

如果阀门用在高速流体(湍流)或热循环应用环境中，则螺纹阀座环应该锁焊到阀体上，避免松落。请在订购时加以指定说明。

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