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For these important and practical problems,sample covariance matrix is an important statistic because many important statistics are functionals of it.When we make statistical inferences,such as estimations and/or hypothesis tests,the sample covariance matrices must be investigated.

以上诸多方面在做估计和假设检验过程中，无不用到大维随机矩阵的处理，尤其是大维样本协方差矩阵的相关性质，因为多元分析中许多重要的统计量都可以表示成样本协方差矩阵的函数。

Ease of use ranges in importance from less important, for a one-time experiment to be run only by the application's developer, who is intimately familiar with the software; to very important, for a production application to be used by a variety of semiskilled operators within a single organization; to extremely important, for a mission- or safety-critical application, or a commercial application intended for distribution and resale.

包括以下三种情况：该软件的开发者，他对该软件非常熟悉，在编程中会经常进行一次性试验，此时易用性就不太重要；一个团队中对该软件半熟悉的操作员来使用该软件，此时易用性很重要；在mission- or safety-critical的场合，或者是准备发布销售的商业软件，此时易用性则非常重要！

Training and evaluation of teaching is an integral part of an important part of students to consolidate knowledge, the ability to upgrade an important measure to test the effectiveness of teachers and students in teaching and learning, timely to address gaps, and to adjust the content and progress of Shariah, the study of law an important basis.

摘 要：训练与考评是教学中不可或缺的重要环节，是学生知识得以巩固，能力得以提升的重要手段；是检验师生教与学成效，及时查漏补缺，调整内容进度及教法、学法的重要依据。

Soja is the most important oil plants on the world and high protein crop, be produced in food and important role was acted in dweller consumption, important place is had in international produce commerce.

大豆是世界上最重要的油料和高蛋白作物，在食物生产和居民消费中扮演了重要角色，在国际农产品贸易中占有重要地位。

Therefore to discuss Coleridge\'s supernaturalism in his poetry and song has important significance,it is a important part of the romantism poetry,moreover it is the most important ingredient of the entire romantism moves, because of the exploration in supernatural field,Coleridge pushes the subject matter and connotation ofromantism poetry into a more vast space.

所以对柯尔律治诗歌中的超自然主义的发掘有着重大的意义，这不仅是浪漫主义诗歌研究史上，更是整个浪漫主义运动研究史上的一个极为重要的组成部分，正是由于柯尔律(来源：ABe9C论文6a6a网www.abclunwen.com)治在超自然领域的探索，把浪漫主义诗歌的题材和内涵推向了一个更为广阔的天地。

The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.

在许多天体物理现象中，例如活动星系核，X-射线双星和年青的恒星理论中，吸积盘理论起着重要的作用，而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论，普遍认为活动天体的周期，准周期光变现象与吸积盘的不稳定性有关，在吸积盘理论中，粘滞起着重要的作用，而磁场是天体物理中普遍存在的现象，对于几何薄吸积盘不稳定性分析，由于强剪切流的缘故，应该包括径向和环向扰动两个方面，本文结合天体物理中的各种周期，准周期光变现象，研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性，结果表明：磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用，且径向振荡大于轴向振荡，所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。

Video controller chip ,which is one of the important component of video embedded systems,plays an important role in video signal acquisition,decoding,encoding,output and other important functions.

视频处理芯片是嵌入式视频系统的核心部件之一，具有视频信号采集、编码、解码、输出等功能。

The elaboration of systems that are able to mimic those enzymes should provide very important tools for three main purposes:(1) the development of new catalysts for important reactions in industrial and fine chemistry, such as the selective oxidation of alkanes and the stereoselective epoxidation of alkenes;(2) the prediction of the oxidative metabolism of new biologically active molecules such as drugs.(3) mimetic peroxidase of high catalytical activity and selectively is very important in bio-analytical field.

建立一系列关于这些酶的模拟体系将为以下三个方面的研究工作提供非常重要的工具：（1）工业或者精细化工方面重要反应新型催化剂的开发，例如烷烃的选择性氧化以及具有立体选择性的烯烃环氧化；（2）新的生物活性物质，例如药物的氧化机理的研究和预测；（3）具有合适底物的高活性过氧化物酶模拟酶在生化分析领域的前景。

Contactless IC card, as the pass certification in No Stop Electronic Toll Collection System, contain many merits such as convenience, tune-saved, durableness, non-pollution, and that the users important data information is stored inside, which play a important part in No Stop Electronic Toll Collection System, so the research of reliable practical contactless IC card system has become a important part in the research of No Stop Electronic Toll Collection System.

非接触IC卡作为不停车收费系统的通行券，具有方便快捷、寿命长、无污染等优点，内部存储着用户的重要数据信息，在高速公路不停车收费系统中扮演着重要的角色，所以研究安全、可靠、实用的非接触IC卡系统，也就成为整个不停车收费系统中研发的一项重要内容。

In order to solve the important and basic problem of the petrogenesis of "Tiantangzhai migmatitic granite" in the core of Dabie orogenic belt, the detailed 1∶50000 regional geological surveying and the big scale dissection of important region (metamorphic rocks, granites and structure), were operated in about 900km〓 area near Tiantangzhai peak. On the bases of the petrology, mineral chemistry, geochemistry of rare earth element and microelement, isotope geochemistry and chronology, physicochemistry, magmatic dynamics, geodynamics, diagenetic simulation, and regional geophysical data, the theory of cooling age and historical geochemistry and the viewpoint of tectonic evolution are applied to study the petrogenesis of Yanshan epoch granites of this region. On the bases of above studies, the process of tectonomagmatic dynamics after indo-Chinese epoch in Dabie orogenic belt is discussed. The important conclusions are gotten

本文针对大别造山带核部&天堂寨混合花岗岩&成因这一重大基础地质问题，在天堂寨一带近900km〓的面积上进行了详细的1∶5万区域地质调查和大比例尺重点区解剖，通过对区内燕山期花岗岩进行岩石学、矿物化学、稀土微量元素地球化学、同位素地球化学和年代学、物理化学、岩浆动力学、地球动力学和成岩计算机模拟等研究的基础上，结合区域地球物理学资料，应用冷却年龄、历史地球化学理论和构造演化观，阐明区内燕山期花岗岩成因，并以此为基础进一步讨论了大别造山带自印支期以来的构造—岩浆动力学过程，取得了如下的重要认识

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。