就诱导出有固定频率的分离涡。

As soon as the spoiler oscillates, induced vortices with definite frequencies appear downstream.

这种变换器大体上运行于固定频率模式.

This type of converters runs mainly in fixed frequency mode.

一些工程项目需要一个稳定可靠并固定频率的低电压脉冲。

Some projects need a nice, steady, low-voltage pulse at a constant rate.

当扰流片静止时，在拢流片后仅形成不规则的大尺度涡，一旦扰流片振动就诱导出有固定频率的分离涡。

When the spoiler is in the stationary condition, a separated flow with larger-scale random vortices is formed, behind it.