Acoustics - determination of sound power levels of noise sources using sound intensity - part 1 : measurement at discrete points 声学.用声密度测定噪声源的声功率级.第1部分:不连续点的测量
The author completes the entire procedure from data acquisition to image reconstruction on computer 作者在微机上成功的实现了从数据采集仿真到图像重建的全过程,并且模拟实现了各种噪声源。
En iso 9614 - 2 acoustics . determination of sound power levels of noise sources using sound intensity . part 2 : measurement by scanning 声学.利用声音强度测定噪声源功率级.第2部分:扫描测量法
Acoustics . determination of sound power levels of noise sources using sound intensity . part 1 : measurement at discrete points 声学.使用声音强度法测定噪声源的声强级.第1部分:在分散点上的测量
As with most other sources of noise , as soon as we define the principle at work we can see ways of reducing the effect 和大多数噪声源一样,只要知道了它是如何形成的,就能找到抑制噪声的办法。
The noises soures in press shop and the cause of those noises are analyzed . some methods for the noises redution are introduced too 分析了冲压车间噪声源及产生原因,介绍了一些减少该种噪声的措施。
The set - up is a circuit network composed of a number of highly accurate microwave iq vector modulators and a noise generator 它的主体是由一组高精度数字式微波iq矢量调制器和一个噪声源组成的网络。
The noise of the fan is mainly consist of circumrotatory noise and backset noise based on the theoretical analysis 首先基于风机噪声理论的分析确定了影响风机噪声源的主要因素是旋转噪声和涡流噪声。
Acoustics - determination of sound power levels of noise sources using sound intensity - precision method for measurement by scanning 声学.利用声强度对噪声源声功率级别进行的测定.使用扫描精确测量法
Acoustics - determination of sound power levels of noise sources - guidelines for the use of basic standards iso 3740 : 2000 ; german version en iso 3740 : 2000 声学.噪声源声功率级测定.基础标准使用指南