sound propagation造句

• The sparker was originally developed for fundamental studies of underwater sound propagation and of subbottom geology .
  火花发生器原来是为了进行关于水下声波传播及海底地质的基础性研究而制造的。
• Impulse sound propagation for environmental noise assessment
  环境噪声评定用脉冲声响传播
• Characteristic of sound propagation in ducts with varying cross - section
  变截面导管声传输特性研究
• Anomalous sound propagation in sea water
  海水中超远距离传播
• Acoustics - impulse sound propagation for environmental noise assessment
  声学.环境噪声评估用脉冲声音传播
• Therefore , the fluid sound propagation of the leakage pipes is studied , according to the acoustic impedance characters
  文中从声学的角度出发，分析了漏损点的声阻抗特性，并对漏损管道内流体的声传播进行了研究。
• Acoustics - recommended practice for the design of low - noise workplaces containing machinery - sound propagation and noise prediction in workrooms
  声学.低噪声机械工作间设计的推荐实施规程.工作室中声传播和噪声预测
• A gas flow in such a scenario will affect the sound field distribution , the sound speed and the sound propagation mode inside the muffler
  此种状态的气流将会影响消声器内部的声场分布、声速、声的传播规律等，特别是气流速度影响更大。
• Acoustics . recommended practice for the design of low - noise workplaces containing machinery . part 3 : sound propagation and noise prediction in workrooms
  声学.含机械设备的低噪音工作场所用推荐操作规程.第3部分:工作间的声音传播和噪声预测
• Modeling the acoustic field with proper sound propagation model is necessary for the research on sound propagation in the sea and is the basis of ocean acoustic tomography
  研究海洋中的声传播需要选择适当的传播模型对海洋环境进行建模，精确的传播模型也是海洋声层析研究的基础。
• Abstract : in this paper the current situation and trends on the study of pipeline vibration and sound propagation are completely summarized , and the researches of this area are looked forward to the future
  文摘:本文对管道振动及声传播领域的研究现状和水平分类作了比较全面的综述,并对今后开展潜艇管道振动、声传播及噪声控制的研究进行了展望。
• The analytical mode is based on the theory of sound propagation in layered media . the concept of equivalent parameters is established . the absorption of sound energy by damping layer ' s is represented by use of complex sound impedance
  解析模型以分层介质中的波动理论为基础，建立了等效参数的概念，并运用声阻抗的复数表示法把阻尼层对介质层声能吸收的影响都考虑进去，通过比较敷设消声覆盖层前后多层传递损失的差异来获得消声层的效率。
• Ray model is one of the conventional sound propagation models , which is simple , intuitionistic and suitable for all kinds of signals and can work in range - dependent environments . so ray model which is used in modeling the acoustic field is an important sound propagation model of ocean acoustic tomography
  射线声学简单、直观，适用于各种信号，并且可以计算介质参数随距离变化情况下的声场，因此，射线声学模型也是海洋声层析研究中重要的声场建模方法。
• This paper describes some experimental investigations of propagation properties of sound in various types and thickness of grain samples using the method of standing wave tube for the first time , extends the sound propagation theory in porous media and develops the sound propagation model in grain , analyzes and identifies the cree ping sound signals of five species of pests
  为了深入研究和有效监测粮堆内部深层害虫发出声信号的传播特性，本文首次采用驻波管法，对声信号在不同种类、不同厚度粮食中传播特性进行了检测和分析，并且进一步推广、发展了多孔介质中声传播理论，建立了粮食中声波传播模型。