查询词典 spectrum

This article discusses the software radio structure of direct sequence spread spectrum system and its performance.

本文主要论述了直接序列扩频通信系统中的软件无线电实现结构。

Q. Kang [31] completed the existence spectrum forlarge sets of almost directed Hamilton cycle decompositions of K_v~*, and gave some results aboutlarge sets of directed Hamilton cycle and path decompositions of K_v~*.

康庆德在[31]中得到了K_v~*的几乎有向Hamilton圈分解大集的存在谱，以及K_v~*的有向Hamilton圈和路分解大集的若干结果。

Spread spectrum communication is an important development direction of communication field.

扩频通信是通信领域的一个重要发展方向。

Discrete fast Fourier transform has been widely applied to signal spectral analysis and can figure out the entire bandwidth spectrum of a signal.

离散快速傅里叶变换算法在频谱分析中得到了广泛的应用，这种算法得到的计算结果是在整个频段上的频谱信息。

Displacement curve of fringe center was drawn and the spectrum of the displacement was analyzed with Discrete Fourier Transform.

文章绘制了干涉条纹位移曲线并对其进行了离散傅里叶变换，给出了所测振动的频谱特性。

The close-form expression of average spectrum efficiency is deduced with considering a discrete finite set of candidate constellation sizes for practical system.

系统平均频谱效率数学表达式的推导考虑了可选调制方式有限的特性，更符合实际。

Discrete spectrum analysis technique and the system of dynamic signal analysis.

离散频谱分析技术及动态信号分析系统。

In Chapter 4,we deal with the problem of the discrete spectrum for the singulardifferential operators with left definite type.

第四章 讨论左定型奇异微分算子谱的离散性问题。

Effects of the time-scale truncation and errors of experimental data on the discrete relaxation spectrum are presented.

数值计算结果表明用这种新算法得到的离散松驰谱更有效可信。

These papers are the classic,they use discrete spectrum to estimate the phase difference.

详细说明：这几篇论文都是非常经典的有关离散频谱来估计相位差的。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。