These devices have neither feedback pipes to control the main jet nor wall attachment effect of the jet on them.
这些装置没有反馈管来控制主喷流，也没有射流的附壁效应。它们的结构很简单可以自激振荡。
2
Based on the analysis of the break mechanism of the cavitations jet, a method of cleaning tubes and pipes based on the principles of cavitations jet is introduced.
在对空化射流的破坏机理进行分析的基础上，介绍了一种基于空化射流的管道清洗方法。
3
The multiple jets and taper pipes are set for production of multiple induced jet, self-absorption type outer-inner mix.