成对比较

Differences of three kinds of plant-caused pollution such as pollen,flying hair and catkin,and smell between different cities and different people were analyzed.

比较常见的植源性污染物包括花粉、飞毛飞絮、气味等，会给人们的日常生活带来不便，甚至对人体健康产生不利的影响(王成，2003)。

Experiment proved that the method based on phase congruency is the one that is invariant to illumination and magnification, robust to noise.

对要匹配的两幅图像，先计算它们的相位叠合，把它们的相位叠合映射成256个灰度级，在这一对新图像上尝试FMI-SPOMF算法，结果比较满意。

Performance of the cathode material and cells were investigated and characterized by X-ray diffraction, cyclic voltammetry and constant current experiments.

将制得的复合材料作正极，锂片作负极，组装成扣式锂二次电池。比较了反应过程中酸处理、反应温度、反应时间等因素对δ-MnO2晶体有机改性的影响。

A detection method of double-threshold constant false alarm movement object on double-base synthetic aperture radar includes finalizing distance compression of various pulse-sampling, dividing orientation time to be multiple CPI, carrying out FFT in each CPI to enter orientation frequency domain, comparing data amplitude of frequency channel at external of clutter region with the first threshold and outputting point trace, making coagulation on point trace, making Hough transform in point trace domain and making decision of the second threshold.

本发明涉及一种用于双基地合成孔径雷达的双门限恒虚警运动目标检测方法，其特征在于：1对每个脉冲采样完成距离压缩；2把方位时间分割成多个相干处理间隔；3在每个CPI内做快速傅立叶变换进入方位频域；4把杂波区外的频率通道的数据幅度和第一门限比较做判决并输出点迹；5点迹凝聚；6在点迹域做Hough变换并做第二门限判决。

Objective To compare the possibility of human and pig dermal fibroblasts used in tendon engineering as seed cells.

目的 对人与猪皮肤成纤维细胞作为肌腱组织工程种子细胞，进行可行性比较。

The film or movie is the most popular and common video resource. In this paper we use the film video as an example, aims to implement real-time retrieve of explosion and shot scenes, has carried on the following research mainly: first, we proposed a method of real-time recognition of explosions based on dominate-color and audio information and improved the accuracy the retrieve;second, we proposed a method of real-time retrieve of shots scenes based on audio information and differences between frames when the shot occurs;third,a whole video abstraction system is proposed, it can cut off the clips which have been retrieved and merge them into a independent video abstraction in the same time edit the information of the it ;forth, it offers two-level retrieval structure of"key frame-highlights"and can play segmentation result and the whole video just like a video player.

电影或电视剧视频是人们日常生活中最喜闻乐见也是最常见的视频内容，本课题以此类视频为研究素材，目的是实现实时爆炸和枪击场景的检测，主要进行了以下几个方面的研究：1针对视频中爆炸场景的主色和音频特点，提出了一种基于声像特征的实时爆炸场景检测算法；2捕捉视频中枪击事件瞬间的帧间变化信息和相应音频信息，提出了一种基于声像特征的实时枪击场景检测算法；3从原始视频中切割检索到的精彩视频场景合并成单独精彩缩略视频，并可进行相关信息编辑，形成比较完备的视频摘要系统；4形成关键帧-精彩视频场景的二级浏览结构，可对分割结果或整个视频片断进行播放，基本实现播放器的功能。

The effect of fiber bundling on the overall elasto-plastic properties of composite material was investigated by comparing the results of fiber bundle composites with that of the single fiber composites.

通过与单丝纤维复合材料的相应结果比较，研究了纤维成束对复合材料宏观弹塑性性能的影响。

Objective To explore the clinical value of different MR sequences in the diagnosis of perianal fistula.

目的 比较不同磁共振成像序列对肛瘘病变的显示，探讨其在临床诊治中的应用价值。

The purpose of develop The program is apply to the JR. Grogshop for manage it's daily operation .the high pertinency that mainly in the person of printing the customer's tab 、recommend particular、easy stat. the data of operation、friendly picture showing 、report forms creating 、using assistant tools and designing the multresolvent and so on .creating the rather perfect system get thread the top of coming true the functions.

本系统的开发是针对中小型酒店的日常管理业务开发而成的，其针对性极强，主要体现在对酒店客户消费清单的打印、特色推荐、方便的业务数据的统计分析、友好的图表数据显示、报表生成、方便的辅助工具使用和多重安全性解决方案设计，通过以上功能的实现来提供相对比较完善的酒店管理机制的建立。

In this paper, the current states of research about the basic theory of harmonic oscillator and hydrogen atom in quantum mechanics are firstly reviewed. On base of it, and the relationships between harmonic oscillator and hydrogen atom in quantum mechanics are studied. By use of the relationships between the hermite polynomial and the laguerre polynomial, the eigenequations of one-dimensional harmonic oscillator and hydrogen atom are conversed into the same equations in form. Therefore the relationships between energy levels and wave functions of one-dimensional harmonic oscillator and hydrogen atom are found. Through the coordinates transform, the relationships between energy levels and wave functions of two-dimensional harmonic oscillator and hydrogen atom are found.

首先综述了谐振子与氢原子的基本理论的研究现状，并在此基础上对谐振子与氢原子的关系展开了研究，通过厄密特方程与拉盖尔方程的相互转化，将一维谐振子与一维氢原子的本征值方程转化为相同形式的方程，从而比较得出它们能量及波函数间的关系，并通过坐标变换将直角坐标系下二维氢原子的本征值方程转化成与曲线坐标系下二维谐振子的本征值方程相同的形式，从而得出二维氢原子与二维谐振子的能量及波函数的关系。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。