时差法在超声波测量流量中的应用程序源码码，原吗运用相关法求的时差 可直接使用。 -Transit-time ultrasonic measuring flow in the application source code, the original you to use the the related Method time difference can be used directly.

用谱方法计算流体力学一些流动现象的整体稳定性,小波包分析提取振动信号中的特征频率，关于超声波倒车雷达测距的。- Spectral methods of computational fluid dynamics flow of some of the overall stability of the phenomenon, Wavelet packet analysis to extract vibration signal characteristic frequency, About ultr