Two-phase velocity fields in a round turbulent jet with Reynolds number 8500 were measured by phase Doppler Particle Analyzer (PDPA).

采用相多普勒颗粒分析仪(PDPA)测量了雷诺数为8500的两相圆湍射流速度场，研究了两种大粒径颗粒对湍流的调制作用。

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Detailed spray characteristics were obtained for a dual orifice atomizer using a phase Doppler particle analyzer (PDPA) in this study.

应用相多普勒粒度分析仪(PDPA)获得了双油路喷嘴详细的喷雾特性。

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Its appliance shown that the development of the traverse system is successful, the system is stable, reliable, and it can be cooperated with the PDPA system.

通过应用表明：该系统的研制是成功的，系统运行稳定、可靠，激光测速系统可与移测架系统配合使用。

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