二次不稳定性 meaning in Chinese

secondary instability

A high frequency secondary instability mode is detected , which rides on the primary instability wave in time domain and appears at the inflectional point of mean streamwise velocity profile
结果表明，高频二次不稳定性在时域上表现为骑在基频波的特定的相位区域。
Experiments are mainly focused on initial growth of unsteady primary instability , high frequency secondary instabilities both in natural condition and artificial high frequency excitation
重点研究了基频不稳定性扰动的初始增长过程，以及自然条件下与人工高频激励下的高频二次不稳定性扰动发生与发展的一些特性。
The initial instability development has been investigated for different modes of artificial disturbances and oncoming wind speeds . experimental studies in natural conditions are performed , where only artificial primary unsteady and steady disturbances are introduced
在人工施加非定常基频与定常扰动的自然条件下，对横流控制的高频二次不稳定性进行实验研究。
Experiments with controlled excitation of primary and secondary instabilities have been performed to study the process leading to the final breakdown of laminar swept wing flow . two types of high frequency secondary instabilities are identified
在人工激励激发基频与定常扰动条件下，施加高频人工激励，研究附面层流流动在高频二次不稳定性扰动的发生与增长过程。