In view of some differences between researches on the liquid jet gas pump inside and outside the country, this paper gives an additional investigation with an experimental set of the small type.

鉴于国内外对液气喷射泵的研究工作尚有一定差异，本文从小型实验设备入手进行补充研究。

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On a new experimental set-up of filter with three ceramic filter elements, the transient velocity outside the filter element is measured by hot-wire anemometer during pulse-jet cleaning process.

在由三根陶瓷滤管组成的实验装置上，利用热线风速仪对脉冲反吹时滤管外瞬态流场进行了测定，分析了喷吹压力、脉冲宽度、过滤气速和喷吹距离对滤管外流场的影响。

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