acoustic duct
英 [əˈkuːstɪk dʌkt]
美 [əˈkuːstɪk dʌkt]
网络 声管
双语例句
- A lot of noise experimental researches on noise suppression have been carried out successfully by the aid of acoustic liner or appropriate increase of the duct length.
并用消声声衬及适当增加管道长度的方法进行了大量的实验研究，取得了良好的效果。 - The two-microphone method is investigated for the objective of in situ measuring the impedance of an acoustic liner in a duct.
对现场测量管道声衬声阻抗的双传声器法进行了研究。 - Sea surface and bottom constituted sound propagation environment of the neritic acoustic duct field.
海面与海底构成了声源浅海海域波导场的声传播环境。 - Ten of 12 cases had congenital unilateral microtia of the first and second branchial arch syndrome, all had defected ear lobe. Among the 10 cases, 7 had acoustic duct, 3 had aural atresia;
10例为第一、二腮弓综合征的先天性单侧小耳畸形，均有残耳垂，其中7例有外耳道，3例外耳道闭锁； - The acoustic attenuation coefficient will decrease with the increase of flow velocity, or with the decrease of absorption coefficient of boundary, or with the increase of section area of the duct.
研究表明，管道衰减系数随着气流流速的增加，管壁吸声系数的减小、管道截面几何尺寸的增加而减小。 - Conclusion The water-filled colon can be used as the acoustic window of extrahepatic bile duct, which makes the ultrasonic diagnosis much more sensitive to the extrahepatic bile duct obstruction.
结论被生理盐水充盈的结肠确能作为肝外胆管的透声窗，从而使肝外胆管梗阻病变的超声显示率显著提高。 - Nonlinear acoustic propagation within two-dimensional rectangular duct
二维矩形波导管中的非线性声传播 - Intrahepatic hyperechoic spots or nodules with acoustic shadows could be intrahepatic bile duct ( IHD) stones or nonspecific calcification.
伴有声影的肝内强回声灶可由肝内胆管结石或非特异性的肝内钙化灶形成。 - Effect of Cleaning Acoustic Duct with Iodophor
碘伏清洗外耳道的效果观察 - Two microphones of transfer-function method is an important development of modern acoustic measurement technology. It can determine acoustic performance of the sample by analyzing the real time data measured in two points of the duct.
双传声器-传递函数法测试技术是现代声学测量的重要发展，通过对管道中两个测点处实时测量所得数据作相关分析，可以测定试件的吸声性能。 - In the past, the acoustic analysis of the duct system was carried out under the hypothesis of ideal gas, but velocity of the actual fluid has an effect on the sound propagation.
在以往的管道系统的声学分析中，都是基于理想气体的假设，但实际流体的速度对管道系统中的声传播产生影响，因而考虑均匀流对于研究管道消声系统的声学特性是必要的。 - The fundamental principle of ultrasonic-waves method is that observing the relative variation of acoustic parameters, such as sound ( velocity) or amplitude, to analyze whether the quality of duct grouting is good.
为进一步的探究提供了基本的理论依据。3.超声波法的基本原理是通过观察声时、声速和波幅等声学参数的相对变化来分析管道灌浆质量的好坏。