文章讨论了利用超声以及一种物理模型来研究松质骨的健康状况。-A physical model for broadband ultrasonic studies of cancellous bone

超声波测距模块变成代码，请先解压后查看。此代码，简单易用，易于上手。-ultrasonic ranging

DHT无线通信学习板，实现超声波测距要求，希望大家多多分享。欢迎大家指正。-DHT wireless communications board to learn, to achieve ultrasonic ranging requirements, we hope to share. Welcome to correct me.