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利用三维粒子动态分析仪（３Ｄ－ ＰＤＡ） 测得了矩形截面三分支联接的三维速度分布。在测量中，经过理论分析与对比试验，选择了蚊香烟雾作为散射粒子。实验结果揭示了三分支管的一些流动特性，为进一步的研究打下了基础
The three-dimensional velocity distribution of three-branch joints with rectangular cross section was measured by 3D-PDA. In the measurement, after theoretical analysis and comparative tests, mosquito coils were selected as scattering particles. The experimental results reveal some of the flow characteristics of the three-branch tube, laying the foundation for further research