查询词典 approximate continuity

The temporal and spatial distributions of the plasma temperature during the dissipation process of lightning are calculated theoretically by applying the equation of motion,the equation of continuity and the equation of energy conservation of hydrostatics.

利用流体运动方程、连续性方程和能量守恒方程，对自然闪电回击后的消散过程建立数学模型，计算了等离子体温度随时间和空间的变化规律。

The last time when the valves open and close the boundary condition equation and heating systems in the other boundary condition equations, one-dimensional unsteady flow equations of motion and the joint solution of continuity equation, we can find the non-dimensional opening when the valve changes, heating system to calculate changes in surface pressure.

上回阀启闭时的边界条件方程与供热系统中的其它边界条件方程、一维不定常流动的运动方程和连续方程联解，就可以求出当止回阀无量纲开度变化时，供热系统各计算截面压力的变化情况。

In the method, the equation of vorticity is simplified and combined with the definitions of vorticity and divergence , and then restrained by the equation of continuity to set the system of retrieval equations. Three-dimensional wind vector, vorticity and divergence can be got by solving the system of equations. Preliminary test has proved that it is feasible.

该方法从动力学角度出发，将柱坐标中的垂直涡度方程适当简化后，联系涡度散度的定义式，再以大气连续方程作约束，得到一个反演方程组，求解方程组就可得到不同高度层上的三维风场以及涡度、散度，初步检验证明其是可行的。

The thesis introduces summarily the differential form of Darcys Law, and derives the continuity equation of groundwater when it is incompressible and irrotional.

论文针对达西定律的微分形式，推导出对于不可压缩流体且无旋时的地下水连续性方程，确定了地下水自由面的边界条件，并求解出考虑降雨入渗时和地下水疏干时自由面的法向流速v〓。

Based on the continuity equation of groundwater and the normal velocity formula of free surface, taking element e as a subdomain R in the seepage flow domain R, according to variation principle, the finite element equation of seepage field can be obtained.

由地下水的连续方程和自由面的法向流速公式，把单元e作为渗流求解区域R上的一个子域ΔR，根据变分原理，得到岩土体渗流场有限元方程。

The equation of continuity is then used to further get a 2-order elliptical equation satisfied by sea surface elevation, and the unpenetrable condition at the shore wall of semi-closed sea area is also derived by means of tidal level.

然后利用连续性方程进一步得到了海面升高即潮位所满足的二阶椭圆型方程，进而导出了以潮位形式给出的半封闭海区岸壁不可穿透条件。

The equilibrium condition of alluvial rivers is determined by flow continuity, resistance and sediment transport relations.

冲积河流的水流连续性、阻力和泥沙运动方程决定着天然河流的输水输沙平衡条件。

The Journal of Contemporary Ethnography's history has been marked by continuity and change.

《现代民族志杂志》的历史，已打下了连续性和变化的印记。

In summary, on the basis of mtDNA data from different space-time popuations in the Middle-south of Inner Mongolia, our research reveals that the genetic structure and ethnologic origin of the ancient populations as well as the relationships and gene continuity between the ancient populations and extant populations.

本研究从分子水平上展现了元朝时期人群的迁徙以及东西方人群间的基因流。

We study several properties of the continuity of the perturbation map when the relative maps are defined on Banach spaces, not only in Euclidean space.

我们研究关於摄动映射的一些连续性质，而一些相关映射都被定义在 Banach 空间中，而不只是在一般的欧几里得空间里。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。