中弱

At first, the paper quote a kind of special matrix ---sign symmetric matrix , anti sign symmetric matrix , weakly sign symmetric matrix and introduced some important results in spectral property about them from some bibliographies. And then, the paper extended the formerly results and gave more general conclusions about spectral property of sign symmetric matrix.

本文首先引入了一类特殊矩阵的概念——符号对称矩阵，反符号对称矩阵以及弱符号对称矩阵，在相关文献中对这类矩阵谱特征的已经有了一些结论，本文在前人研究的基础上将相关结论做了进一步的推广，得出了有关这类符号对称矩阵谱特征的更一般性的结论。

In Chapter 4,we prove the existence of global weak solutions to the compressible NSP equations with density-dependent viscosity coefficients when the initial data are large and spherically symmetric by constructing suitable aproximate solutions.

在第四章里，对于粘性系数依赖于密度的等熵可压缩NSP方程，在R~3中包含球心的球状区域内，我们得到了大始值的，球对称弱解的整体存在性。

The main results are as follows: l.The olfactory response of Tetranychus viennensis to different plants odors: Olfaction takes part in the response during the hawthorn spider mite looking for host plants, that means Tetranychus viennensis were attracted by odors from host plants.

结果如下：1。山楂叶螨的雌成螨对不同植物叶片挥发性物质的嗅觉反应：山楂叶螨在寻找寄主植物的过程中，嗅觉参与反应，即山楂叶螨能被寄主植物释放的气味物质所吸引；不同的寄主植物对山楂叶螨的引诱程度不同，苹果、梨等的引诱作用较强(着螨率95％，77.5％)，日本樱花的引诱作用较弱(着螨率45％)。

In this paper, according to the theory of electromagnetic fields, firstly, electromagnetic field of large and medium asynchronous motor is calculated from the angle of coupled fields, secondly, the end voltage of the stator is taken as constraint condition and starting current in stator is iterated in the numeral computation process, finally starting current and starting torque at rated voltage are gained, and by comparing calculation results with test results ,starting performance of large and medium asynchronous motor meet the demand of project practice.

本文根据电磁场理论，从耦合场的弱耦合角度首先计算了大中型异步电动机的电磁场，在电磁场的数值计算过程中，以定子端电压为约束条件，对定子起动电流进行了迭代计算，得到了额定电压下的起动电流和起动转矩，并把正弦时变场计算结果与实测结果进行对比，表明大中型异步电动机的起动性能的计算结果满足工程实际的需要。

Using two-dimensional numerical simulation of the full hydrodynamic equations, the dynamics of the counterpropagating wave, localized traveling wave and stationary overturning convection with the weakly Soret coefficient is studied.

本文通过二维流体力学基本方程的数值摸拟，讨论了具有较弱的Soret结合的中等长高比空腔中的Counterpropagatingwave，局部行进波及定常行进波的动力特性，探讨了局部行进波的Rayleigh数依赖性及稳定性。

To inspect the third grade stereoacuity function with Yan's stereogram.

目的 观察视觉功能训练在弱视患儿Ⅲ级视功能重建中的作用。

Some elementary concepts and overviews of ordering of risks are given, then discuss some equal conditions and pleasant invariance properties of stop-loss order after some operations such as convolution, compounding, mixing and forming conditional compound Poisson Sums.

第三节中得到保险常见损失分布和索赔次数的顺序关系，指出属于不同分布族的两个分布之间顺序关系较弱，其次，由于索赔次数多为复合泊松分布，因此索赔次数之间比较关系不明显。

In the solution of subacidity, FETs reacts with AlCl3 to form a stable and sensitive yellow complex, its maximum absorption wavelength is 415 nm.

研究表明：在弱酸性条件下，香椿叶提取液中总黄酮与AlCl3形成稳定的黄色配合物，在415nm处测定显色液的吸光度确定总黄酮的量。

As natural monopoly industry, on the one hand, tap water industry has the distinguishing features: network motion, precipitating cost, public good, subadditivity, and externality.

作为自然垄断行业，一方面，自来水行业具有明显的网络运行、沉淀成本、公益性、成本弱可加性以及外部性等特点，客观上要求实施政府管制，以克服"市场失灵"；另一方面，自来水行业又具有市场范围的地域界限性和不同区域服务水平、服务质量的差异性以及产品使用的私人特性，使得在该行业中引入市场竞争机制成为可能。

Over the years, in fact, the weak pattern has become so prevalentthat we use the term regular to refer to verbs that form their past tense by suffixation of -ed. However, there have occasionally been changes in the other direction:the past tense of wear, now wore, was once werede ; that of spit, now spat, was once spitede ; and the development of dove is an additional example of the small group of verbs that have swum against the historical tide.

事实上，多年来弱式动词变得非常普遍，我们用术语规则动词来指那些由加后缀-ed 来构成过去式形式的动词，然而偶尔也会向另一方向发生变化： wear 的过去形式现为 wore ，曾为 weared ； spit 的过去式现为 spat ，曾为 spitede ； dove 的发展是反历史潮流而动的一小组动词中的另外一小组动词的例子

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。