查询词典 variational method

Finally, Using the method of calibrating instrument in a variational concentration calibrates this instrument. According to the result, the performance of the instrument is analyzed.

最后采用非恒定浓度的测氡仪器标定方法对研制的仪器进行标定，分析了仪器的一些性能指标。

Firstly, the lake water quality model is developed under the condition of both internal and external pollution by using the method of microelement analysis, then homogenizes the non-cylindrical boundary condition and utilizes the methods of vector expending and pseudomonotone of the variational operator, and last the existence and uniqueness of the solution for a type free initial-boundary value problem is obtained.

本文首先运用微元分析法导出在外源和内源双重污染下湖泊水质模型，然后对一类自由初边值问题通过对非柱形边界条件的齐次约化，运用变分型算子的向量扩张和拟单调方法获得解的存在性、唯一性。

On the basis of design of a new type bilateral excitation electromagnetic vibrating head, a simplified mathematic model was set up through predigesting electromagnetic field to electromagnetic route method, and motion function of the system was also obtained based on variational theory and non-conservative system Lagrange function.

在设计了一种新型的双边激励的电磁式振动头的基础上，采用将磁场简化为磁路进行分析计算的方法建立振动头的简化数学模型，并根据变分原理及非保守系统拉格朗日方程得出系统的运动方程。

The optical soliton propagation in monomode optical fibres with third-order dispersion is reinvestigated by using variational method. The evolution equations for optical soliton parameters are found, and self-wave-peak shift phenomena is explained quantitatively.

用变分法重新研究了单模光纤中的三阶色散对光孤子传输的影响，找到了光孤子参数的演化方程组，定量地解释了光孤子的自波峰漂移现象。

Establish the modified functional of the analysis of the beam element and plate element, base on the generalized variational principle and penalty function method.

同时指出了选择合理的坐标原点以便充分发挥覆盖位移函数的全阶项对总平衡方程组成时刚度矩阵和荷载矩阵的贡献，使求解精度得到提高。

The energy curve of the body-centered cubic structure of theH92 +cluster is calculated by means of variational method.

用变分法计算了H29+团簇的体心立方结构与能量。

According to the dynamics analysis of the cotton sliver coiling process,by considering the minimum friction of cotton sliver caused by screwy pipes as objective function the design of screwy pipes of can coiler is explained based on the theory of the variational direct-method.

对棉条圈条过程定量地进行了动力学分析，以棉条所受曲线斜管摩擦力最小为目标函数，基于变分问题直接法原理设计出圈条盘螺旋形曲线斜管。这种螺旋形曲线斜管充分利用圈条盘的转动对棉条产生的离心力甩摆作用，使棉条所受曲线斜管摩擦力较小，从而使出条更顺畅；在一定程度上降低了圈条盘螺旋形曲线斜管堵眼频率与条筒乱条几率，使其更适应现代并条机生产高速化的要求

Using the first-principles self-consistent discrete variational method based on density functional theory, we investigated the effect of alloying element Mn on the electronic structure of the kink on the [100](010) edge dislocations in bcc iron. We calculate the structural energy, the interatomic energy, the local density of states and the charge density.

用基于密度泛函理论的自洽离散变分方法研究了合金元素Mn对bcc Fe中[100](010)刃型位错上扭折的电子结构的影响，计算了格位能、原子间相互作用能、电荷密度及态密度等物理参量。

The total density of state of the the boron-rich rare-earth borides〓(R=La, Nd, Sm, Eu)are calculated using discrete variational X〓method.

计算所得到的态密度与XPS价带谱基本上相符，由于态密度与XPS价带谱的对应关系，表明计算结果的正确性。

Finally the effect of quantum lattice fluctuation in exciton state is studied by variational method.

论文的最后研究了量子晶格涨落对激子态的影响，通过对哈密顿量的幺正变换，得到激子态的激发能，对计算结果进行分析最后给出结论。

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。