查询词典 spectral density

Starting from the spectral representation of quasi-particles, when Debye screening mass and finite width of the particle are taken as parameters into the spectral functions, we will get effective propagators of quarks and gluons, and then establish the effective perturbation theory which reflects directly collective effects in QGP, and analyse some thermodynamics problems about soft partons in QGP.

接着，从准粒子的谱表示出发，自洽地将Debye屏蔽质量和粒子的有限宽度作为参量纳入QGP中玻色型和费米型准粒子的谱函数，得到夸克胶子等离子体中胶子和夸克的有效传播子，进而建立了直接反映QGP集体效应的有效微扰论，藉此一般性地分析了夸克胶子等离子体中软粒子的有关热力学问题。

The method includes techniques of spectral time sequence multiplexing and spectral separation.

本发明公开了一种高速复杂流场的全场光学测量方法与测量装置，属于流场测试技术领域。

A first index identifying a first speech parameter template (614) corresponding to a first speech spectral parameter vector (604) of the sequence of speech spectral parameter vectors is transmitted.

发送一个第一索引，该索引标识一个对应于话音频谱参数向量序列中的一个第一话音频谱参数向量（604）的第一话音参数模板（614）。

To ensure spectral compatibility with ongoing services, in G.selt the ITU will need to set spectral bounds for SELT measurements.

为了确保频谱能兼容目前的业务，需要ITU在G.selt中设定SELT测试的频谱边界。

White spectral OCT is set up on partial spectrum analysis,the system chooses required white light source and receiving spectral. It would have more detection depth, higher resolution and improving signal to noise ratio.

建立了基于子光谱分析的白光频域OCT，该系统通过选择所需要的白光光源及其接收频段，这样既可以兼顾最大探测深度和高轴向分辨率，并且提高信噪比。

At last, we provide the upper semi-continuity and compactness of the spectral scalar solution set mapping under some suitable conditions, and the necessary and sufficient conditions to guarantee the lower semi-continuity of the spectral scalar solution set mapping by virtue of the concept of essential solution.

最后，给出了谱标量解集映射满足上半连续且紧的充分条件及下半连续的充分必要条件。

In this paper an analysis of the multi-spectral images space and spectral features is presented, and useful lossless compression techniques such as preprocessing, prediction and transformation are introduced, and also a comparative analysis of these techniques is discussed.

本文分析了多光谱图像的空间和语间相关性等特点，从多光谱图像预处理、预测和变换无损压缩方法等方面介绍了目前主要的多光谱图像无损压缩方法，并对其特点进行了对比分析。

The analysis on soil spectral data obtained from the different area of our country shows that exists a soil spectral line in 2-dimension space or multidimension space, but it is not a strictly straight line, it is a belt with certain width.

中文摘要：通过对我国各地的土壤光谱反射率的分析表明，无论在二维或多维空间中，确有土壤光谱线存在，但不是严格的一条直线，而是有适当宽度的带。

Its discretization is based on spectral elements in space and central differences method in time. The numerical result, shows that this approximation has spectral accuracy in space and up to second-order in time.

该解法引入一阶Clayton-Engquist-Majda吸收边界条件，在空间上利用谱元方法，在时间上利用中心差分的积分方法得到波动方程的离散形式，并给出具体算例进行了验证。

The best training samples are searched and selected on the whole image by the local space information and spectral matching, and then they are purified on spectral domains.

利用影像的空间信息在图像局部范围内自动搜索和选择最佳样区位置，再用光谱匹配对寻找到的最佳样区在光谱空间上进一步纯化。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。