到差

Simulation results show that the resulted error variance is small and it is robust to external disturbance.

仿真结果表明，采用提出的算法所得到的滤波误差方差较小，且对外界大噪声具有很强的鲁棒性。

We don't know what the error variance, s2, is, because we don't observe the errors, ui

我们不知道误差方差 s2 是多少，因为我们不能观察到误差 ui

After that, the author focus his attention on the pure sequential confidence for the error variance in linear models.

紧接着，作者把注意力转移到线性模型误差方差的纯序贯区间估计。

With the investigation of the domestic and foreign literature systematically, the bases on the domestic and foreign present research and the comprehensive utilizations of the various knowledge of fluid mechanics in porous medium, reservoir engineering, mathematical physics, perforation completion, numerical simulation and so on, this article takes numerical simulation of gas reservoir of water solubility as the research aim which has completed following research works and obtained the corresponding research results: it analyzes the nature of the Water-soluble gas and formation water as well as the influent factors of the solubility through the study of massive materials; It establishes mathematical models three-dimension, the dual medium, the gas-water phase through the way of finite difference in the migration of water-soluble gas, which describes the entire process of release, migration and production in formation, where it considered the problems of variable bubble point; According to the numerical models of gas reservoir of water solubility it provides solution procedure that based on black oil model; It discovers that there will obtain the good effects in the lowly speed of development through simulation; the reinjection of formation water may largely enhance the produce degree of water-soluble gas when we consider reinjection in simulator; It considered the influence of perforated completion on development so as to increase the simulator"s versatility, It discovers that the simulator may reflect the conditions of development when we exanimate he simulator"s reliability with the empirical datum.

本文以水溶性气藏数值模拟研究为研究目标，在系统调研国内外文献、深入分析国内外研究现状的基础上，综合利用渗流力学、油气藏工程、数学物理方法、射孔完井以及数值模拟理论等多方面的知识，完成了以下研究工作并取得相应的研究成果；①通过对大量的资料调研，分析了水溶气、地层水性质、储层地质性质以及影响气体在水中溶解度的因素。②考虑到由于高压产生的大量水力裂缝，采用有限差分方法建立水溶气运移的三维、双重介质、气-水两相全隐式数学模型，该模型描述了水溶气在地层中的释放、运移和采出的整个过程。③在原有黑油模型的基础上，根据水溶性气藏数值模型编制了该数值模型的求解程序，该程序可以求解单重、双重介质两种情况。④通过模拟不同开采速度对水溶气开发效果的影响，发现开采速度较慢的时候可以取得较好的开采效果。⑤在模拟器中考虑了注水对水溶性气藏开发的影响，地层水回注可以大幅度提高水溶气的采出程度。⑥为增加模拟器的通用性，在模拟器中考虑了射孔完井方式对开采的影响。⑦检验模拟器计算的可靠性，发现在使用实验数据对水溶性气藏进行模拟时，模拟器可以很好的反映气藏开发的状态。

How fast will an increment of the excitation voltage reach 95% of the difference between ceiling voltage and the system voltage rating.

励磁电压增加到最高电压和系统额定电压之差的95%时要多少。

If the pork pesorcincli exorbitance, also affects the film business card printing and membership card making it suitable to their needs on the cards and membership cards are not conducive.

如果爽滑剂含量过矮的话，还会感化到薄膜的制卡和会员卡制作适性，这差制卡和会员卡制作是极为倒霉的。

Of or relating to experimental error that increases in magnitude with each successive measurement .

测量误差：观测到的变量与多元回归方程中的变量之间的差。。。。

In Chapter 5, considering the uncertain returns of securities as fuzzy numbers which follow an exponential possibility distribution function, we give a semi-definite programming method to solve the non-linear problem in estimating the exponential possibility distribution function process. Furthermore, we extend the center spread model proposed by Tanaka and Guo to the case of a frictional financial market.

第五章将证券收益率看作是服从指数可能性分布的模糊数，提出了证券收益指数可能性分布估计过程中求解非线性问题的半正定规划方法，并且将Tanaka和Guo的中心差值可能性投资组合模型扩展到了带摩擦的金融市场的情况。

Sheepishly . On a side note, for at least three out of the five worst accessories this year, we can thank celebutante extraordinaire Paris Hilton and the likes.

在一个方面注意到，至少有三个出五个最差的配件，这一年里，我们可以感谢celebutante extraordinaire帕丽斯希尔顿和喜欢。

Enlightened by Fei Xiao-tong's differential-order theory, the article proposes that social capital is an expanding sequence of altruism essentially, which endows business governance with relational quality, especially in countries with strong familism.

本文将社会资本界定为嵌入于社会网络的关系资源，并借鉴费孝通先生的"差序格局"理论，提出其本质上是一种基于利他主义的扩展序——从无条件利他主义到工具性利他主义。

This brought fixed cost, but it also is meant at the same time use a source to won't make you singlehanded assume a problem.

这带来了一定的成本，但它同时也意味着使用开源不会让你独力承担问题。

He gained a small fortune in real estate.

他在房地产上发了一笔小财。