本文介绍利用超声共振法测量声速和声衰减系数的原理及自来水和乙醇的测量结果。
In this paper, the principle and primary results of measure ultrasonic sound velocity and attenuation coefficient by ultrasonic syntonic method are introduced.
采用超声衰减技术研究了稀释纸浆悬浮液中纸纤维质量浓度的测量方法，讨论了稀释纸浆悬浮液中超声的衰减机理。
Ultrasonic attenuation technique is used to investigate a method to measure mass concentration of paper fibers in dilute pulp suspensions.
本装置用超声脉冲回波与定标指数波形比较的方法测量超声衰减。
An instrument for measuring ultrasonic attenuation by means of comparing the ultrasonic pulse echo with a calibrated exponential decay wave-form is described.
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