声速的测定是物理学中一个基础实验，就目前而言已有多种测定方法可以供我们选择，本文中介绍一种测声速的简单新装置，本装置通过声波的反射、叠加，利用钢管中液体的振动来测定声音在液体中的传播速度，该实验操作简单，实验仪器精度高，可行性高，可以在物理教学中推广使用。%The measurement of sound velocity is a basic experiment in physics ,for now there are a variety of measuring methods for us to choose .This article introduces a new device to measure sound velocity simply .This device can determine the sound velocity in liquid by the acoustic reflex and overlay ,and the liquid vibration in steel tube .This experiment can be operated smply with precision instruments .And also for its high feasibility ,it can be adapted widely in physics teaching .
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