可闻声波检测与空气中声速的测定
Audible Sound Wave Detection and Determination of Sound Speed in Air
本文设计制作了用可闻声波和超声波测距离的两种实验装置,比较了这两种测量方法的优缺点。
This article is designed to audible and ultrasonic ranging experimental device to compare the advantages and disadvantages of these two measurements .