negative pressure wave meaning in English
反向波
负向压力波
负压力波
Examples
- Leak detection ; negative pressure wave ; wavelet transform
泄漏检测负压波小波变换 - Taking account of the corresponding characteristic of the signal singularity and wavelet transform module maximum in multi - scale changing , the discrete wavelet transform is applied to get the featured inflection point of negative pressure wave
利用信号奇异点与小波变换模极大值在多尺度上变化对应的性质，将离散小波变换应用到获取压力波信号序列特征奇异点中，可以对泄漏点进行定位。 - The velocity change of negative pressure wave generated by pipeline leak during the process of transmission is analyzed , the formula of wave velocity changing with temperature is deduced , and the pipeline leak positioning problem is transformed into a function optimization problem
摘要通过分析管道泄漏产生的负压波在传播过程中速度的变化，推导出波速随温度变化的公式，并将管道泄漏点定位问题转化为函数优化问题。 - Two crucial technologies in instantaneous negative pressure wave method are analyzed in this dissertation , then a means is presented which can eliminate the dynamic response time diversity between pressure sensors in the beginning and end of the pipeline , by adopting gps to unify the system time between data collecting systems in two ends
分析了负压波泄漏定位方法的两项关键技术，提出了消除首末、端压力传感器动态响应时间差的方法，采用gps来统一首末端数据采集系统的系统时间；使定位更加准确。