查询词典 noise-power-ratio

The noise control of closed three-dimension domain (such as the cabin, cab, workroom, etc) is practical significance.

三维封闭空间(如船舶舱室、汽车驾驶室、工作间等)的噪声控制具有重要的实用价值。

Modal analysis of an acoustic system can determine its natural frequency and show the distribution of the acoustic quantities in space, give the knowledge about the way that the acoustic system responses are affected when changes are made in the excitation sources or in the domain geometry, and provide valuable information for the noise control of closed three-dimension domain.

通过对声学系统的模态分析，可以得到其固有频率以及在此频率下声学量在声场空间上的分布，了解到声源及声场空间几何参数的变化对声学系统的相应的影响，为三维封闭空间的噪声控制提供了依据。

After the closedown of the airport, noise pollution abated .

机场关闭后，噪音小多了。

In this paper, about how to realize the wired television bi-directional HFC network technical problems of " the collecting disturbance" and "collecting equalization" were presented because of using the co-axial cable as transmission medium of the branch and going-to-some place by distribution have been solved, and beginning with the noise disturbance analysis, some methods and countermeasures of reforming and settling the problem have been put forward using part of experimental data and theoretic calculation .

本文就如何实现有线电视双向HFC网，解决因以同轴电缆为传输媒质的支线和分配入户网中，存在着"汇集干扰"，"汇集均衡"等技术问题，从噪声干扰分析入手，引用部分实验数据和理论计算，提出了改造解决的一些方法与对策。

This paper studies the causes of noise sensitivity and edge coarseness using usual edge detection presently.

针对目前常用的边缘检测方法对噪声比较敏感，测得的边缘比较粗糙等现象，在传统边缘检测方法的基础上提出了一种基于数据融合的边缘检测方法。

It mainly studies and testifies thewind-generated noise model of the shallow ocean and the remote ship noisemodel, which is suitable for the southeast coastland of China.

该项目主要目的是研究和验证适合我国东南沿海的浅海风关噪声模型和远处航船噪声模型。

AIM: To investigate the changes of cfos expression in the cochlea of guinea pigs after noise exposure.

目的：观察噪声暴露后豚鼠耳蜗cfos基因表达的变化。

When he ran across the yard past the manure pile, the donkey gave him a healthy blow with his hind foot, and the rooster, who had been awakened from his sleep by the noise and was now alert, cried down from the beam,"Cock-a-doodle-doo!"

公鸡此时被吵闹声惊醒了，拚命地叫了起来，"咯，个，咯咯！"

After preprocessing video of a fluorescing cocklebur leaf to remove noise and normalize changes in lighting, they identified the patches by looking for segmentations of the data that yielded the optimal division of light and dark regions.

通过预处理发荧光的苍耳属植物叶片后，科学家们通过数据的分割找到了发荧光的部分，并找到光照度最佳的区域。

Topics include: mathematical definition and properties of information; source coding theorem, lossless compression of data, optimal lossless coding; noisy communication channels, channel coding theorem, the source-channel separation theorem, multiple access channels, broadcast channels, Gaussian noise, and time-varying channels.

课程主题包括：针对「资讯」的明确数学定义及性质描述；信源编码理论、无失真资料压缩技术、最佳化无错误编码；杂讯干扰的通讯频道解析、频道编码理论、资讯来源-通道编码分离理论、多重存取频道解析，广播型态频道解析、高斯杂讯及多变量时间频道解析。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。