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For the Riemann boundary value problems for the first order elliptic systems , we translates them to equivalent singular integral equations and proves the existence of the solution to the discussed problems under some assumptions by means of generalized analytic function theory , singular integral equation theory , contract principle or generaliezed contract principle ; For the Riemann-Hilbert boundary value problems for the first order elliptic systems , we proves the problems solvable under some assumptions by means of generalized analytic function theory , Cauchy integral formula , function theoretic approaches and fixed point theorem ; the boundary element method for the Riemann-Hilbert boundary value problems for the generalized analytic function , we obtains the boundary integral equations by means of the generalized Cauchy integral formula of the generalized analytic function , introducing Cauchy principal value integration , dispersing the boundary of the area , and we obtains the solution to the problems using the boundary conditions .

对于一阶椭圆型方程组的Riemann边值问题，是通过把它们转化为与原问题等价的奇异积分方程，利用广义解析函数理论、奇异积分方程理论、压缩原理或广义压缩原理，证明在某些假设条件下所讨论问题的解的存在性；对于一阶椭圆型方程组的Riemann-Hilbert边值问题，利用广义解析函数理论、Cauchy积分公式、函数论方法和不动点原理，证明在某些假设条件下所讨论问题的可解性；广义解析函数的Riemann-Hilbert边值问题的边界元方法是利用广义解析函数的广义Cauchy积分公式，引入Cauchy主值积分，通过对区域边界的离散化，得到边界积分方程，再利用边界条件得到问题的解。

We proposed that CDW order and superconducting order are competing with each orther ,which does not support the coexistence of these two orders.

我们根据这些新的观测结果对Sr14-xCaxCu24O41体系的相图进行了修正，并提出在该体系中CDW和超导电性是相互竞争的，没有共存的迹象。

Ensure highest level of quality order fulfillment through order receipt to product delivery of Celanese products.

在从接单到发货的全过程中确保订单高品质地执行

Primary duty is to ensure highest level of quality order fulfillment through order receipt to product delivery of Celanese products.

在从接单到发货的全过程中确保订单高品质地执行

For example, 2-order Taylor central finite difference is adopted in Yee format and 4-order in Fang format.

而Taylor级数展开定理是构造差分格式的一种重要方法，例如Yee格式采用二阶Tabor格式，Fang格式采用四阶Taylor格式。

This algorithm firstly calculates the fourth-order cumulant and second-order central moment of the window and identify noise threshold. Later it adaptively adjusts the filter windows and right value according to the number of the noise points in the window.

算法首先计算窗口的四阶累积量和二阶中心矩并确定噪声点阈值：然后根据窗口内噪声点个数自适应调整滤波窗口，自适应计算权值；最后对噪声点逐点滤波。

The modified double weight function method is to introduce new weight functions doing subtraction between two negative exponential-type functions. For a Pearson type three probability distribution, the MDWF is able to make estimations of the Standard Deviation and Coefficient of Skewness C(subscript S from the second-order weighted central moments reduced to the first-order weighted central moment estimations.

修改的双权函数法是将两个负指数型函数之差所构成的函数类取作权函数，对于皮尔逊Ⅲ型分布，它能使σ和Cs的估计由原权函数法的二阶加权中心矩降低为一阶加权中心矩估计。

According to the some properties of the differentiation ,I found that the symmetry of the graph is closely related to the first-order differentiation and the second-order differentiation .from this ,I search for a way to identify the symmetry of the functional graph for the direct line or the central symmetry of the functional graph for the some dot .

摘 要：利用导数的一些性质，发现了函数图象的对称性与函数的一阶、二阶导数的密切关系。根据这些关系，找到了一种判定函数图象是否关于某一直线对称或关于某点成中心对称的方法。

Based on Bezier curve continuance of first－order and second－order derivative, the characteristic vector equation of two Bezier curve is presented in point of intersection. The algorithm is not only of high accuracy with all of the interpolated points being on the curve theoretically, but also of very high speed in the real－time interpolation processes. The interpolation velocity does not change and the segment tolerance of interpolation can be control by selecting the parameter in cerement rationally every time.

为保证两段Bezier曲线在连接点处一阶导数、二阶导数连续，导出了两段Bezier曲线特征向量应满足的关系方程，Bezier插补法不仅在理论上可使所有的插补点落在曲线上，而且实时插曲补速度高，每次插补时可合理地选择参数增量，能使插补速度保证不变，也可控制弓高误差。

Please noted Jean that I am always optimistic all time especially with you.I think the goods will also be improved in 2006,although everything is better,regarding the chaise longue we have now changed 4 parts to 2 parts,also we lengthen the cover,now it is more beautiful,Jean,My coleague have another order with grown order to England,that I have been shared with his pictures,you can see some and give me some comments,please note that your leather is better than his.

其实我也一直觉得国际贸易完全可以用自己的能力思想来掌握在手的，但是总觉得差了点什么，所以现在我一直在努力研究出更有效可行的方法来掌握信任，先信任后生意而且根据自己现在做的六个单来说的确是屡试不爽但是失败的例子也多，不是我现在询盘多的话定单早就停了现在我开了四个信箱，注册到ALI，MIC上所以几乎每天都有询盘一个询盘交友的故事可能越来越多，可惜我没时间

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。