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boundary line相关的网络例句

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与 boundary line 相关的网络例句 [注:此内容来源于网络,仅供参考]

In this thesis, we apply Coulomb's law and propose an external force to overcome the problem of traditional ACM that can not capture the cavities of an object. Assume that each node of a snake has its own electric charge, and the object boundary has opposite electric charge. Then object boundary will attract the nodes of the snake. This helps the contour easily to move to the object boundary.

本论文中,我们运用库仑定律的观念,提出了一个运用局部引力作为外力的方法,用以克服传统主动性轮廓模型在凹面处收敛不佳的缺点;假设物件边界带电,而主动性轮廓模型的结点带与物件边界相异之电荷,则物件边界会吸引著主动性轮廓模型各结点,使得模型曲线更容易靠近物件边界。

Compared with the known results,the nonlinearity is allowed to change sign and is involved with the first-order derivative explicitly.In particular,the boundary condition includes the Dirichlet boundary condition and Robin boundary condition.

与现有工作相比,我们所考虑的动力方程不但非线性项可变号,而且包含一阶导数项,所考虑的边值条件更具一般性,比如可以包含Dirichlet及Robin边值条件等。

In order to bypass the difficulty of discretizing the boundary r or the Lebesgue discontinuous set Su in the Mumford-Shah model, we use an edge-detector function and a threshold value to induce a thin-belt where the image boundary lie in and displace the length of the boundary by the area of the thin-belt approximatively.

为避免在离散化Mumford-Shah模型中的边界Γ或Lebesgue不连续集S_u的困难,我们借助边界检测算子和门限值,确定图像边界所在的窄带区域,用窄带区域面积近似边界的长度。

Initial boundary value problem of two dimensional unsteady diffusion equations is solved in this paper. By using time-dependent fundamental solution of two dimensional diffusion equations and the extension of double layer potential, we establish virtual boundary integral expression of diffusion equations. Then virtual boundary element method is used to implement the numerical computation.

本文在求解二维非定常扩散方程的初边值问题时,利用二维扩散方程与时间有关的基本解,基于双层位势的延拓,建立二维扩散方程的虚边界积分表达式,然后利用虚边界元法进行数值计算。

This invention discloses a preparation method for anti-corrosion rare earth magnet material characterizing that it takes the optimized grain-boundary phase design as the starting point on the basis of a dual alloy method to select Nd base alloy with high crystal forming ability as the assist alloy and reduces the temperature of the press mold blank in a quartz container to room temperature from over grain-boundary phase melting point with the water extraction way to get enough cooling rate and guarantee the non-grain-boundary phase, compared with the material of the same composition prepared by ordinary method, the weightlessness of this invented material reduces over 30% after testing the weightlessness of the material by laying it for 96 hours under 121deg.C, 2 atmosphere and 100% humid environment to show the advanced performance of anti-corrosion.

本发明公开了一种耐腐蚀稀土永磁材料的制备方法,其特征是它在双合金法制备工艺的基础上,以优化晶界相设计为出发点,选取具有较高非晶形成能力的Nd基合金为辅合金,并在烧结回火时将置于耐高温石英容器中的压型坯件,从晶界相熔点以上以水淬冷却的方式降温至室温,以达到足够的冷却速率,确保得到非晶晶界相,根据本发明制得的耐腐蚀稀土永磁材料,通过测量在121℃、2个大气压以及100%湿度环境下放置96小时后材料的失重情况,结果显示本发明得到的材料与常规方法制备的相同成分的稀土永磁材料相比失重减少了30%以上,充分证明其具备了更优越的耐腐蚀性能。可广泛应用于电子、汽车、计算机、电力、机械、能源、环保、国防、医疗器械等领域。

This is a kind of evolutionary elliptic free boundary problems, in which the free boundary changes with time and at each fixed time the unknown function satisfies a boundary value problem for an equation of elliptic type.

详细本文分两部分。第一部分讨论拟定常电加工问题。这是一类发展型的椭圆自由边界问题,其自由边界依赖于时间的变化而不断演化,在每一固定时间,未知函数满足椭圆型方程的边值问题。

Using the method of blow up lower and upper solutions, the existence and boundary behavior of positive boundary blow up solutions for some elliptic systems of competitive type with singular weight functions are obtained, here the singular weight functions are permitted to be bounded in some parts of the boundary, and to go to infinity or even oscillate in other parts.

利用爆破上、下解方法,本文建立了带奇异权函数的竞争型椭圆方程组正的边界爆破解的存在性和边界行为,这里奇异权函数可以在边界的某一部分有界,而在其他的部分趋于无穷或者震荡。

The modal tests of PCB and PCB assembly (free boundary condition and fixed boundary condition) were carried out. The equivalent elastic modulus and damping parameters of PCB can be gained, and the fixed boundary condition of finite element model was also determined. These will help to the following work.Second, drop impact tests of three different heights were carried out. Strains and acceleration responses of PCB were measured. Failed BGA packages of different test conditions were dyeing, and cross section analysis of failed solder joints was conducted.

针对JEDEC标准试件的局限性,提出了设计便于统计学研究焊点可靠性的试验试件的构想,利用有限元模态分析方法确定并验证了用圆形PCB组件替代JEDEC标准试件的可行性;通过一系列模态试验和有限元模态分析,确定了圆形PCB组件的相关试验参数,这不仅为跌落碰撞下PCB组件有限元模拟确定了较为合理准确的有限元模型,而且为正确地评价跌落碰撞下PCB组件的可靠性问题奠定了基础。2。

The modal tests of PCB and PCB assembly (free boundary condition and fixed boundary condition) were carried out. The equivalent elastic modulus and damping parameters of PCB can be gained, and the fixed boundary condition of finite element model was also determined. These will help to the following work. Second, drop impact tests of three different heights were carried out. Strains and acceleration responses of PCB were measured. Failed BGA packages of different test conditions were dyeing, and cross section analysis of failed solder joints was conducted. It was found in our drop tests that the root cause of lead-free solder joints under drop impact was the combined effect of mechanical shock and PCB bending vibration.

针对JEDEC标准试件的局限性,提出了设计便于统计学研究焊点可靠性的试验试件的构想,利用有限元模态分析方法确定并验证了用圆形PCB组件替代JEDEC标准试件的可行性;通过一系列模态试验和有限元模态分析,确定了圆形PCB组件的相关试验参数,这不仅为跌落碰撞下PCB组件有限元模拟确定了较为合理准确的有限元模型,而且为正确地评价跌落碰撞下PCB组件的可靠性问题奠定了基础。

As the application of the intermediate models is concerned, the works applying the intermediate models to investigate the topographic boundary layer, frontogenesis and low-level frontal structures, and the boundary layer jet are summarized in this article. It is mainly focused on the dynamic characteristics of the Ekman layer and its effect on the low-level structure and circulation of the weather systems illustrated by the models. It is shown that the intermediate boundary-layer models have great potential in illustrating the low level structures of the weather and climate systems as they are coupled with the free atmospheric models.

对于这些Ekman边界层近似理论模型的进一步应用问题,主要回顾和总结了利用上述模型探讨地形边界层结构、大气锋生过程、低层锋面结构和环流以及边界层日变化、低空急流形成等动力学问题的研究,并对这些研究所揭示的Ekman层动力学特征及其对自由大气低层运动的影响进行了分析,结果表明,这些Ekman边界层近似模型可以较好地揭示大气边界层动力学特征,在大气边界层动力学及其与自由大气相互作用的研究上具有重要价值。

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相关中文对照歌词
On The Boundary
Boundary
If I Die (Line Em Up Mix)
Young Boy
Hit My Line
Line 'Em Up
Jump The Line
My Kinda Girl
Trade A Moment
Finish Line
推荐网络例句

The Porsche Owner: But it's my car!

可,这是我的车呀。

LOX_83}{Oh, another bunch of wackos.

{LOX_83}{呃,又一群怪人。

It is difficult to fit a suit on him because he is so irregularly built.

他的体形和常人不大相同,很难有合身的衣服。