【摘要】 <正> 实验系统利用位相比较法与共振干涉法测量声速是我们都很熟悉的方法。实验方框图如(图1)所示。其中的超声干涉仪是关键部分。目前尚无商品实验仪器系统,我们自己动手研制了简易超声干涉仪。更多还原

【Abstract】 In this paper,We introduce a ultrasonic interferometer measuring velocity of sound in ais. The altrasouic interferometer is designed and made by owcselves.It is easity operated and conveniently serviced and expended a little money. Using it the experimental effect is gool.更多还原