1) acoustic liner
声衬
1.
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。
2.
A finite element model is presented for sound propagation in a flow duct with an acoustic liner,which incorporates the major practical effects of wall impedance,variable duct geometry and non-uniform flow.
应用该模型针对一种真实的高速转子声源进行了管道消声的数值模拟,不仅得到了细致的管内声场分布情况,更利用其快速的特点完成了声衬声阻抗的优化计算。
3.
The bimicrophone method is an important in situ method to measure the acoustic impedance of acoustic liner,which is going to be investigated in this paper.
双传声器法是工程上在线测量声衬声阻抗的重要方法,为解决实用声衬蜂窝尺寸过小而无法直接嵌入传声器的问题,本文设计了探针传声器,通过外径1。
2) liner
[英]['laɪnə(r)] [美]['laɪnɚ]
声衬
1.
With the method of equivalent source surface,a new numerical method is also constructed in this investigation,which includes the effects of the liners on sound propagating and avoids calculating the complex eigenvalue in lined ducts.
本文以广义Lighthill方程和广义Green函数为基础给出任意截面管道声传播计算模型,同时应用等价分布源方法建立了包含声衬影响的声传播模型,该方法避开了复杂的管道特征值计算,并在此基础上以积分变换发展了等价分布源方法,免去了声源及观察点匹配时产生的奇异性,使该方法大大简化,易于工程实际计算。
2.
This paper presents a transfer element method(TEM),which can be used to predict the sound prop- agation in a varying cross-section duct with acoustic liners.
TEM以等价分布源方法为基础,该方法的优势在于易于计算变截面管道内的声传播,同时,对管道内部声衬位置及长度没有任何限制。
3) substrate noise
衬底噪声
1.
The general model of the effect of substrate noise on analog circuits in mixed-signal integrated circuits is set up in this paper.
建立了混合信号集成电路中衬底噪声对模拟电路影响的一种通用模型 ,在此基础上 ,提出了衬底噪声测试的一种新的连续时间直接测试方法。
2.
This model can characterize the substrate noise in the mixed signal ICs accurately.
利用二维器件模拟器MEDICI提取出重掺杂外延型衬底的电阻宏简化模型,所需的6个参数均可通过器件模拟得到,能够精确表征混合信号集成电路中的衬底噪声特性。
3.
The transmission of the substrate noise in mixed-signal integrated circuits is introduced in this paper briefly.
介绍了衬底噪声耦合效应在不同工艺衬底中的传播,应用medici模拟了不同衬底中,噪声发生端和噪声接收端噪声在不同间距下噪声传播的情况,并从工艺和电路设计两个方面介绍了一系列抑制衬底噪声的方法。
4) Substrate crosstalk
衬底噪声
1.
Substrate crosstalk in the mixed signal IC and its effect on the analog/digital circuits are investigated based on PSPICE simulator and using two external programs written by the authors in C language.
应用 PSPICE及采用 C语言自编的外部程序 ,对单片数字锁相环中衬底噪声耦合及衬底噪声对电路性能的影响进行了模拟和分析 ,有助于进一步理解衬底噪声以及衬底噪声对复杂的混合信号电路工作的影响。
2.
In this paper, a complex mixed-signal circuit-monolithic digital phase-locked loop along with its substrate crosstalk models is built and simulated using PSPICE and two external programs written in C Languadge.
应用PSPICE及采用C语言自编的外部程序，对单片数字锁相环电路中的衬底噪声及对电路性能的影响进行了模拟研究和分析，有助于进一步理解衬底噪声及衬底噪声对复杂的混合信号电路工作的影响，提出了实际应用中选择衬底类型的方法。
5) acoustic lining
吸声衬垫
6) perforated liner
穿孔板声衬
1.
Engine noise is an important noise source of the airplane;using perforated liner to restrain the engine noise is an important means of aircraft noise control.
本文介绍了利用穿孔板声衬结构吸声原理,通过设计穿孔板声衬的结构参数,实现控制噪声的设计方法并通过试验结果加以验证。
补充资料：衬褡
1.亦作"衬搭"。 2.指背心﹑背搭之类贴身内衣。 3.引申为陪伴，搭当。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条