查询词典 weak basis

Then the boundary element integral equation of interior and exterior form is deduced in detail, also the form with corner coefficient. The significance for numerical calculation and principle of the singular integral is analyzed, and a non-isoparametric transformation method is presented to calculate weak singular integral and Cauchy integral, the method presented provides us a very simple way to computer the two kinds of singular integral of Helmholtz boundary integral equation, and it is easy to program in computer. After the difficulty of the calculation for multi-frequency of Helmholtz boundary element is explained, a method named SECHIEF (Series Expansion Combined Helmholtz Integral Equation Formulation), which is focused on the computational efficiency, is presented.

对结构声辐射的边界积分方程的内部形式与外部形式进行了详细的推导，给出了角点系数的计算方法与边界积分方程的形式，在此基础上，分析了奇异积分产生的原理及其对数值计算的重要性，提出了一种计算奇异积分的非等参(来源：Ae8a8BC论文网www.abclunwen.com)单元的变换方法，该方法给Helmholtz 声学边界积分方程中的弱奇异积分与Cauchy 奇异积分的计算以及编程提供了极大便利。

In chapter 3,we consider the Cauchy problem of transportation equation 〓Which is referred to as the simplification model of gas dynamics equations with constantpressure,and prove the existence and uniqueness of weak solution.

在第三章，我们考虑了运输方程〓，2的Cauchy问题，并且证明了广义解的存在性。最后，我们考虑下列二维Cauchy问题〓通过引进新的广义解定义，证明了解的存在唯一性。这个解可能含〓波。

This may result in yarns that are considerably weaker in some areas than in others, caus in g breakage to occur easily at the weak po in ts.

从而引起应力的不均匀分配。纱线某段的强度比其它段要低，在纱线的弱段容易产生断头。

The research on the me cautionary system is all the way the weak points of the research on crime.

对预防体系的研究在犯罪研究中一直是一个弱项。

In the near future to address the lack of new investors into the market of securities investment experience, investment philosophy immature, and weak risk awareness and risk-resisting ability of the new situation and new features, in-depth development of education as the main risk to the content of investor education, improve investors "Caveat emptor" risk awareness, strengthen its ability to identify and risk tolerance.

在不久的将来，以解决进入证券市场的新投资者缺乏投资经验，投资理念不成熟，风险意识薄弱和抗风险的新情况和新功能的能力，深入的教育发展面临的主要风险对投资者的教育内容，以加深投资者"买者自负"的风险意识，加强其能力，识别和风险承受能力。

Heard the same crow's caw, in a morning filled weak sunshine.

在阳光微弱的早晨，听到同一只乌鸦的叫声。

For nonzero t′,the CDW and SDW states are unstable over a finite portionof the phase diagram at weak coupling.

对于非零的t′，CDW态和SDW在一有限的弱耦合区域是不稳定的。

In places where cellular phone signals are weak these are especially good.

在手机信号弱的地方，这些都是特别好的。

This paper illustrates the development of technique of sand production mechanism and prediction of sand production amount in weak cementation sand stone reservoir.

对弱胶结砂岩油藏出砂机理和出砂量预测技术的研究进展进行了综合论述。

Ecological change, on the other hand, seems a weak-minded, circuitous process, centered in bodies shoved against wind, water, gravity, sunlight, and rock.

另一方面，生态变化好像是低能迂回的过程，其注意力集中于生物躯体与风、水、重力、阳光和岩石的对抗。

Researches reveal that students who suffer from corporal punishment tend to resort to violence in their future life.

研究表明遭受过肉体惩罚的孩子倾向于在他们今后的人生中使用暴力。

Total sugar of sarcocarp and chlorophyll of pericarp increased firstly, and then decreased afterward along with altitude; Titratable acidity, ascorbicacid and anthocyanin of pericarp were increased along with altitude; The content of protein increased firstly and decreased afterward along with altitude; Carotenoid of pericarp were decreased along with altitude.

果肉总糖和果皮叶绿素含量随海拔高度升高先升高后降低；可滴定酸、维生素C和果皮花青苷含量均随海拔升高而升高；蛋白质在1720m处最大，1420m处最小；果皮类胡萝卜素随海拔升高而降低。