The paper deasls witl1 measurement and analysis of instuntaneous flow rate of hydraulic imPactor by means of CAT and orifice meter self-designed. A few of new conclusions are obtuined.

• 利用计算机辅助测试方法，通过自行设计的孔板式流量计对液压冲击器的瞬态流量测试、分析，得到了几个新颖的结论。