查询词典 resolution ratio

The fast fourier transformation method with computer was used to increse the signal to noise ratio in high resolution gas chromatographic trace analysis .

将计算机快速富里叶变换应用于高分辨率气相色谱痕量分析中，以增加色谱峰的S/N比，提高分析精度。

The experiment results showed that the resolution of the presented technology was 5μm, that the signal-to- noise ratio could reach 10^3, that the detection limit was 1 fluor/μm^2, and that cross-talk was almost eliminated.

实验结果表明，本扫描仪的分辨率可达到5μm，信噪比高达10^3，检测灵敏度最高为1 fluor/μm^2，扫描速度快，cy3与cy5之间串扰小。

Line horizontal resolution and a S/N ratio of 50dB ?

570线水平分辨率和一个S / N 比的五○分贝？

Based on the wavelet and multi-resolution theory, a new method is proposed to construct the protection judgment to discriminate the inrush current and internal fault by the ratio of high frequency segments in different scales of the energy spectrum.

基于小波多分辨率分析理论，提出了一种以能量变化率的比值作为判据，区分变压器励磁涌流和内部短路电流的新方法—小波能量谱图解法。

For a start, before the seismic inversion it is essential for a reservoir to enhance the basic research of the rock geophysical characteristic analysis, horizon calibration, fidelity processing and model analysis, etc., and of the reservoir's lithologic character, physical, electrical and gas bearing property. Subsequently based on the fundamental principle of seismic inversion, a series of inversion methods and their application conditions were emphasized. Finally, taking Labureng area as a target, by comparing various inversion effects, we aimed at enhancing the precision of seismic image, increasing SN ratio and resolution, and highlighting seismic responses of the target strata, and presented reliable geophysical references for the understanding of reservoir evaluation, gas bearing modelbuilding and reservoir mechanism in HJQ area.

首先把地震反演前的基础研究工作做扎实，其中包括储层的岩性、物性、电性、含气性在内的岩石地球物理特征分析、层位标定、保真处理和模型分析等；其次从地震反演方法技术的基本原理出发，重点探讨各种反演方法的技术特点和应用条件；最后以杭锦旗地区拉不仍工区为靶区，通过对不同地震反演方法处理效果的综合对比分析，以提高地震成像精度、提高信噪比和分辨率、突出目的层段的地震响应特征为目标，为杭锦旗地区储层评价、含气模式建立，成藏规律的认识提供可信的地球物理依据。

The main work and innovation1 In general , a image compression method has different effect to different image . Some are fit for image which has much high frequency . Some are fit for image which has much low frequency .This paper analysis the applicability of fractal algorithm . In this dissertation , an improved algorithum is given . The basic algorithum without eight change and the joint use of quantitative coding , The compression ratio and PSNR can be adjusted , and it can get more quickly speed of coding .2 To a group of exact fractal code , the decoding image can be any resolution .With this characteristic ,choose the proper domain block and range block,this paper get an algorithum which can get higher decoding PSNR and speed than the basic fractal algorithum.3 Give a new method to calculate the scale factor . The calculation of basic algorithum is complex and enormous . The factor of scale is an important variable of the basic algorithm. Now there are two methods to calculate the factor of scale .A new method was given to calculate the factor of scale. The calculation load and complexity are reduced by the new method. Compared with the basic algorithm , the method can reduce coding time.4 The basic fractal algorithum is based on the Collage theorem and contraction mapping theorem . A mathematic model based on basic fractal algorithum is given .

本文的主要工作及创新点主要包括以下几点：1一般情况下，一种图像压缩的方法对不同特点的图像，压缩效果会有所不同，本文利用分形压缩编码对不同特点的图像进行编码，分析了分形编码对不同图像的编码适用性，利用去掉8种变换的分形编码算法与简单的均匀量化编码方案相结合，得到了一种可以调节压缩比与解码质量的分形编码方案，该提高编码速度6倍以上。2分形编码的特点之一是分形解码的分辨率无关性，即对于一组分形编码可以将其解码到任意分辨率下，本文利用分形编码的这一特点，结合不同的量化编码方案，选择合适的定义域块与值域块及适当的编解码分辨率，得到了一种提高解码质量，编码速度提高12倍以上的加速算法。3比例因子是基本分形算法中的一个重要变量，目前有两种计算比例因子的方法，文中给出了一种新的求比例因子的方法，该方法简化了求比例因子的计算，从整体上减小了基本分形算法的计算量，简化了算法4分形压缩的数学基础是不动点定理与拼贴定理，本文根据基本的自动分形编码方法，建立数学模型对其进行推导，得到了用普通数学的极限理论解释分形编码的数学表达式，从而对由基本分形编码得到的解码图像中的像素点的值给出了确定的表达式。

Information processing technique ; wavelet analysis ; smoke screen ; multi-resolution analysis ; infrared ; effectual obscurant area ; obscuring ratio

信息处理技术；小波分析；烟幕；多分辨分析；红外；有效遮蔽面积；遮蔽率

Depending upon your use of the images on your site, you may have to experiment with this to get the right ratio that keeps the resolution quality good while maintaining a small file size.

取决于你在站点上怎样使用图像，你可能要尝试一下这个方法，来得到一个正确的比率，在保存一个小的文件尺寸的时候，保持一个好的分辨率质量。

In order to raise the S/N ratio and the seismic data resolution...

通过该技术在辽河探区的应用，取得了良好的经济效益和采集效果。

From the results it showed that the method has good effects in synthetic seismogram inversion with different resolution, signal to noise ratio and phase.

试算结果表明，粒子群优化算法在不同分辨率、不同信噪比、不同相位子波合成的地震记录反演中效果明显。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。