"为了分析自吸泵自吸初期时的压力脉动变化情况，分别在在叶轮，蜗壳中设"的英语翻译
【 中文 】
为了分析自吸泵自吸初期时的压力脉动变化情况，分别在在叶轮，蜗壳中设置监测点。其中W1~17分别位于蜗壳四个断面和出口处（出口处监测点如下图）。P1~7位于叶轮出口处
【 英语 】
In order to analyze the pressure fluctuation of self-priming pump in the initial stage of self-priming, monitoring points are set in impeller and volute respectively. Among them, W1-17 is located at four sections of the volute and at the outlet (the monitoring points at the outlet are as follows). P1~7 is located at the outlet of impeller