查询词典 approximate continuity

By using the continuity equation and weak hydrody-namic interaction theory in the relaxation time approximation, the spatial variation of the radar scattering cross-sec-tion has been proved as proportional to the gradient of current velocity.

在浅海海流速度垂直分布廓线为均匀的假定下，由流体连续性方程和弛豫时间近似下流体力学弱相互作用的理论，已证明雷达散射截面的空间变化正比于海流方向上海流速度变化的梯度。

Examined the finite element in weak continuity, they possess identicalaverage stain.

本文证明了如果单元应变可以表示成线性形式，则它收敛于其常应变。

Loosedthe illter-elemefit colltinuity further with the requirement of Irons patch teSt,obtains the weak continuity condition ensured convergence.

用分片试验的要求来进一步放松单元间的连续性，可以得到保证收敛的弱连续条件，它只包括单元顶点的函数值连续和法向导数积分连续2个条件，从而扩大了有限元的构造范围。

Derive the requirement to strain and displacement of Patch Test. Give the relationship between weak form of continuity equation and the Patch Test, through which the hybrid element method and quasi-conform element method are analyzed. Refined direct stiffness method and generalized conforming elements are also analyzed about why they can pass patch test. At last, as an example of using the requirement of patch test for displacement, improved the BCIZ Element.

得出分片试验对位移函数和应变函数的要求，这些要求便是一个好的有限元法所应保证的；分析了几何方程弱形式与分片试验的关系，借此分析了杂交元、拟协调元如何满足这些要求，以及在满足这些要求的同时产生的对其他条件的影响；分析了精化直接刚度法、广义协调元和双参数法如何保证分片试验的满足；最后作为位移条件的应用例子，改进了BCIZ元。

The calculation based on the quasi conforming element method is the exact solution of generalized compatibility equations and satisfies the weak continuity requirement naturally,and in the calculation,which does not need satisfy stress equilibrium conditions,the calculating process of the matrix's inverse is simplified.

拟协调元不需要应力满足平衡条件，简化了矩阵求逆计算，容易得出应变的离散精度，因此可以解决常规有限元难以适应的领域，对计算力学发展起着重要的作用。

Finally,usingHodge decomposition theorem,domain variations theory and capacitytheory,we prove that the continuity of very weak solutions of a classof nonlinear elliptic equations on varying domains.

最后，使用Hodge分解、区域拓朴和容量理论，我们证明了一类非齐次半线性椭圆型方程很弱解关于区域的连续依赖性。

Modify the non-conformin8 nominal derivation of BCIZ element accordin8 tothe weak continuity conditiory obtained convergent element too.

考察弱连续条件下的有限元，结果它们具有相同的平均应变，其它收敛的有限元、如离散的克希霍夫板元、也具有这种平均应变。

The reflected wave of Lei-1 seismic profile measured during the high resolution exploration in 1991 is characterized by poor continuity and weak energy.

针对1991年高分辨率勘探所得雷－1地震剖面反射波连续性差、能量弱的特点，为了用地震勘探方法解决四川盆地油气储层薄、孔隙度低、油气产出能力与裂缝发育程度关系这3个地质问题，1997年在四川盆地罗渡溪构造开展了以查明雷－1构造形态、断层展布为地质目标的高分辨率地震勘探方法试验，得到了一套关于高分辨率地震勘探采集装备配置及野外施工的方法。

The algorithm uses the Doppler velocities of the three receivers as weak constraints and uses the continuity equation as a strong constraint in a cost function in which the two horizontal wind components are the control variables.

该风场反演方法利用主动雷达和被动接收系统测量的径向速度作为弱约束，用质量连续方程作为强约束，来反演三维速度场。

The main goal of the thesis is to study such some problems as theexistence of weak solutions of quasilinear elliptic equations involvingcritical Sobolev exponents on a bounded domain and〓,the unique-ness of weak solutions、regularity of weak solutions、stability ofweak solution on exponent p、continuity of very weak solutions ondomains、the fusion problem of weak solutions and the existenceof minimal positive solution of a class of quasilinear elliptic obstacleproblems,which have been extensively concerned,but have not beensolved satisfactorily in the latest several years.

本文主要对近年来人们普遍关注而又没有完全解决的几个问题——有界域及无界域上带临界增长的拟线性椭圆方程弱解的存在性，弱解、很弱解的唯一性、正则性，解关于区域的连续依赖性，解关于指数的稳定性，弱解、很弱解的合并问题，以及椭圆型偏微分方程对应的障碍问题极小正解的存在性等进行研究。

The studies on the developing of new media are very important to the increasing of the area density of HDD and to the implementation of hybrid recoding technology.

光磁混合记录方法，是一种可以突破超顺磁极限的限制，并进一步提高硬盘记录密度和读写速率的一种新型超高密度信息存储方式。

In io, mTOR inhibition promotes T cell anergy under conditions that would normally induce priming.

体内研究中，在正常可激发免疫反应的条件下，抑制mTOR可促使T细胞无能。