In this paper, the principle and primary results of measure ultrasonic sound velocity and attenuation coefficient by ultrasonic syntonic method are introduced.
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。
A frequency domain characterization method using low frequency ultrasound is put forward to estimate parameters of ultra thin elastic layers, such as: the sound velocity, thickness and density.
本文提出一种定量无损估计超薄弹性层声速、厚度和密度参数的低频超声波频域定征方法。
Sing-around method for sound velocity measurement have found wide acceptance because it is simple in circuitry and high in accuracy.
环鸣测量声速法具有电路简单、使用方便、测量精度高等优点，已广泛地应用。
A new method of measuring the velocity of sound in the atmosphere is proposed, which USES fixed journey system, comparing to that used varied journey system before.
提出用固定行程系统测量空气中声速的新方法，与以往所用的变化行程系统进行比较。
The programs adopt stratified constant-gradient method to approximately describe the sound velocity distribution.
程序中采用分层等梯度近似来描述海洋中的声速分布。
Combined with the calibration method, two methods for the sound ray bending correction in deep sea are developed when the sound velocity profile is known and unknown separately.
文中结合海底应答器位置校准方法，分别就声速分布已知和未知两种条件开发了深海声线弯曲修正方法。
The empirical regression equations and high significance fitting curves of sound wave velocity and deformation modulus for test rock mass are got by regression analysis method.
通过回归分析，获得坝区试验点岩体的声波波速与变形模量的回归经验方程和高度显著的回归拟合曲线。
The empirical regression equations and high significance fitting curves of sound wave velocity and deformation modulus for test rock mass are got by regression analysis method.
通过回归分析，获得坝区试验点岩体的声波波速与变形模量的回归经验方程和高度显著的回归拟合曲线。
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