Equivalent Specific Acoustic Resistance of Sound Absorbing Materials

1、

Opposition to the flow of sound through a surface; acoustic resistance is the real component of acoustic impedance and acoustic reactance is the imaginary component.

声音在通过一个表面时受到的阻力；声阻是声阻抗的实部，声抗是声阻抗的虚部。

互联网摘选

2、

Effects of Axial Magnetic Field on Acoustic Resonance of Low Power Metal Halide Lamp

纵向磁场对小功率金属卤化物灯声共振的影响

互联网摘选

3、

The main methods are also put forward to handle acoustic resonance with electronic ballast.

并分析总结了电子镇流器解决声共振问题的方法。

互联网摘选

4、

The research on measurement of pipe length by means of acoustic resonance

利用声共振测量管件长度的研究

互联网摘选

5、

Preliminary research of chicken egg crack detection based on acoustic resonance analysis

敲击振动检测鸡蛋裂纹的初步研究

互联网摘选

6、

This paper tries to discuss the design intension of the master work, through the reading of the work's place, acoustic, shade and shadow, religious metaphor etc, and to move our inspiration of design.

本文通过对作品的场所、声学、光影、空间、宗教隐喻等方面的解读，探讨作品的设计内涵，试图给今天的建筑师们以新的启示。

互联网摘选

7、

Results: 1 The US appearance of breast cancer: Round or irregular mass with spiculated border, angled border, posterior acoustic shadow, minim calcified dots, rich blood flooding and irregular blood flooding, Etc.

。结果：（1）乳腺癌的超声表现：不规则形或圆形，纵横比1，边缘毛刺，边缘成角，后方声影，微小钙化，较丰富血流、不规则血流。

互联网摘选

8、

Results Ultrasound characteristics of TM in teenagers were found similar to adult TM. Unique diffused and bilateral minute echogenic lesions, smaller than 2 mm, no acoustic shadow, were scattered within testicular parenchyma.

结果青少年TM超声表现与成人相同，都表现为双侧睾丸内弥漫、散在、对称的直径在2mm左右的无声影小光点。

互联网摘选

9、

Qualitative inversion method was proposed to realize computer processing of defect identification by acoustic shadow overlapping method.

提出了定性反演方法，实现声阴影重叠法判别缺陷的计算机处理。

互联网摘选

10、

In the ultrasonogram, we found that the metal and glass foreign bodies were followed by acoustic tails, and the rest of non-metal were followed by acoustic shadow.

在金属和玻璃类异物之后为声尾，其余非金属类异物之后为声影。

互联网摘选

11、

Theoretical Study on Using Laser to Detect the Underwater Acoustic Signal

利用激光探测水下声场的理论研究

互联网摘选

12、

Design of the acoustic signal transmission system based on CPLD

基于CPLD控制的声信号发射系统设计

互联网摘选

13、

The theoretical and simulation analysis about acoustic signal processing in multi-path channel and the engineering software design are given in the dissertation.

该系统采用主动工作方式，本文系统地研究了在多途信道中对声学信号进行处理的理论研究和仿真分析及工程软件设计。

互联网摘选

14、

A Study on Acoustic Signal's Pickup by an Experimental Minisize Piezoelectric Ceramic Sensor

微型压电陶瓷传感器拾取声学信号的实验研究

互联网摘选

15、

At last, the theory and instrument of radio acoustic sounding system ( RASS) are discussed. It utilizes wind profiler radar to measure the temperature of the lower atmosphere layer.

最后讨论了无线电声探测器（RASS）利用风廓线仪测量大气低层温度的原理及其装置。

互联网摘选

16、

The experimental application of dst-3 type inter-borehole acoustic sounding and borehole acoustic oil-mining system in the Jidong ( eastern hebei) oil field

DST－3型井间声波探测和井中声波采油系统在冀东油田的试验

互联网摘选

17、

Relationship between Sonic Wave Velocity and Hest-conductivity Coefficient in Coal and Rock Acoustic Sounding In Explosive Rocks

煤层岩体中声波速度与导热系数的关系

互联网摘选

18、

Temperature-Measuring Radio-Acoustic Sounding System

测量温度的无线-电声探测系统

互联网摘选

19、

The Holocene Active Fault in the Western Part of Bohai Gulf Showed by Acoustic Sounding

声波探测显示的渤海湾西部全新世断层活动

互联网摘选

20、

A preliminary analysis of the acoustic sounding of the atmospheric boundary layer near the mountainous area

近山地区大气边界层声达探测的初步分析

互联网摘选