声波

To validate the measurement results, the symmetric velocity field is measured by a hot-wire anemometer and simulated with a CFD software, and the unsymmetric velocity...

将其结果与声波法监测结果进行对比，三者在一定程度上吻合得较好。实验证明了声波法监测炉内烟气速度场的有效性，显示了良好的应用前景。

Infrasound (0.0001-20Hz) is acoustic energy with characters of little attenuation and long distance during radiation, inaudibility, diffraction and resonance in some parameters.

次声波是频率为0.0001Hz-20Hz的声波，具有传播衰减小、传播距离远、易于衍射、一般听不到、达到一定参数可引发共振等特点。

By means of hydration experiment and immersing by actual drilling fluid in field, the inversion formula of previous acoustictime is setted up based on the acoustictime after hydration and hydration time.

通过实验室水化实验以及矿场实际钻井液浸泡规律建立了基于水化后声波时差和水化时间的原状声波时差反演公式。

Through the correlation analysis of log curve, AC is reconstructed with the chosen SP and GR.Then seismic inversion is carried out.The result can well distinguish the sand from the mudstone.It also reflects the sand horizontal distribution and the vertical thickness, which can effectively guide the production.

通过测井曲线相关性分析，选择自然电位、自然伽马曲线重构声波曲线，然后用重构声波进行地震反演，反演结果很好地区分了砂泥岩、反映出砂体的横向展布特征和纵向厚度，有效地指导了生产工作。

It is the sound part of the forehead, as the organ to receive sound in its mandible.

发出声波的部位是它的前额，而接收声波的器官位于它的下颚骨。

Objective: To explore the effects of vibroacoustic massotherapy on improving the psychosomatic and gastrointestinal symptoms in patients with functional dyspepsia, and to study the conduting and receiving sensibility of the sound wave and electric current at the main points of the spleen and stomach meridians in lower limbs of these patients.

研究目的：探讨音乐声波按摩疗法对功能性消化不良(functional dyspepsia， FD)患者心身症状的改善作用，以及对下肢脾胃经主要腧穴声波和电流接受和传导特性的影响。

It was conclude that the influence of the air pressure on the mechanical effect of the plasma shock wave does much matter with the defocus distance of target. The influence of target materials, target area and target structure on the mechanical effect of the plasma shock wave is analyzed.

论文还分析研究了激光等离子体声波和激光等离子体冲击波力学效应的关系，提出了利用激光等离子体声波特征量判断激光等离子体冲击波力学效应的方法。

The criterion is that the location with according to the maximal mean square deviation of the AE signals is the height level of fluidized bed.

利用颗粒运动碰撞壁面产生声波的机理以及声波信号随流化床高的规律性变化，根据料位处的声信号能量及声信号均方差均达到最大的状态，提出了声信号测定料位高度的判据，即声信号的均方差比达到最大时的床高即为料位高度。

The numerical algorithms of the direct acoustic scattering problem with the Neumann boundary condition is studied.

数值求解Neumann边界条价下的声波障碍散射正问题，这是声波反问题研究的基础。

Based on the theory of the electromechanical analogy and the special wave equation,the equivalent circuit of the exponential acoustic waveguide was derived,the formula of its impedance transformation was obtained.

基于机电类比原理，从特殊形式波动方程出发，推导出了指数形变截面声波导管的等效电路，从等效电路推导出了声波导管的阻抗转移公式。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。