查询词典 spherical

A variational method with differential forms gives better precision for numerical solution of transport critical problem based on spherical geometry, and its computation seems simple than other approximate methods.

对于球几何问题，讨论了一种基于微分方程的变分形式求解方法，数值计算显示达到了较满意的精度，而且计算过程比起其他近似方法要简单

Accounting for the characteristics of freeze-drying of granular material, a theoretical heat transfer model of atmospheric freeze-drying in spherical geometry was developed. The temperature distribution and movement distance of sublimation interface were calculated, then the speed of drying process can he deduced. Theoretical analysis was done on influence factors such as bed temperature, material size and adsorbent diameter.

以粒状物料为例，建立了球坐标下常压冷冻干燥的传热过程理论模型，计算了物料干燥过程中的温度和升华界面的移动距离，并对床温、物料尺寸和吸附剂粒径等影响因素进行了理论分析。

In this dissertation, solar chromosphere-corona models are extended to spherical geometry for the first time. By using time-dependent, compressible MHD simulation, we numerically study, either 2-dimensionally or 3-dimensionally, the local and global propagation processes of the disturbances in solar atmospheric models.

本文首次将太阳色球层-日冕模式推广到球坐标情形，利用时变可压缩磁流体动力学模拟，对太阳大气模式中扰动传播的局地及全球问题进行了二维和三维数值研究。

Microsphere material was about 10 μm in diamerter and had good spherical geometry, high monodispersity with nanometer size holes on the surface.

结果 扫描电镜观察示复合材料微球直径约10 μm，单个分散存在，微球表面存在纳米级孔洞。

In addition, the common high school mathematicalcurriculum standard regards spherical geometry as special subject 3 ofthe third optional series, which is set up to further improve the qualityof math students whoa re interested in mathematics and geometry withthe purpose of cultivating students imagination and geometric spaceabilities.

普通高中数学课程标准将球面上的几何作为普通高中选修系列3的专题3。

The annulus model captures the key features of rotating convection in full spherical geometry and has been widely employed to study convection, magnetoconvection and dynamos in planetary systems, usually in connection with the small-gap approximation neglecting the effect of azimuthal curvature of the annulus.

圆环模型被广泛用来研究行星系统的对流，磁对流和发电机。通常在这些研究中用到了小间隙的近似，忽略了圆环的环向曲率效应。我们这一工作用数值模拟方法解完全的非线性对流方程组来研究有限间隙的旋转圆环中的非线性对流。

Our conclusion is : For general transport equation and some special transport equations (slab geometry, spherical symmetry, pillar symmetry) we can evaluate some relevant physical quantities and geometrical properties from the exiting photon flux. The method we will use is to transform the transport equation into integral equation by integrating it along its characteristics, then we prove the nonlinear operator K is monotone and continuous with respect to its arguments and obtain the existence of K~-1. Consequently, we can evaluate some relevant physical quantities and geometrical property of the medium.

我们得到的结论是：无论对于一般的迁移方程，还是当介质具有某种对称性时(板对称、球对称、柱对称)的迁移方程，我们都可以根据泄漏的光子流估计介质各种相关物理量和几何特性，所用方法都是将迁移方程通过沿特征线积分转化为积分方程的形式，然后证明非线性算子K关于自变量的单调性和连续性，从而得到逆算子K~(-1)存在，进而达到估计介质各种相关物理量和几何特性的目的。

The solarterrestrial transit process of three successive CMEs during November 4-5, 1998 has been investigated numerically in onedimensional spherical geometry. These CMEs interact with each other while they are propagating in interplanetary space and finally form a "Complex Ejecta".

在一维球坐标系下模拟了1998年11月4日至5日3个连续日冕物质抛射在行星际空间的传播和相互作用并最终形成"复杂抛射"的日地传输过程。

GuoShouJing his ancestors in the Yuan Dynasty in China are well-known astronomer, mathematician, hydraulic engineering experts, he advanced mathematics, spherical geometry, triangulation has become highly literate, living in the home environment such郭伯of jade, from the favorite Math, especially for simpler and quicker abacus, but also aroused the interest of his research, he studies at abacus are enormous achievements, the Qing Dynasty famous mathematician Mei-ting in the "ancient Yan count slightly," Chu said plate of law, began in the early Ming郭伯jade, jade郭伯abacus at laws on the tremendous contribution to the world people have been referred to as "beads set of laws," the creators

他的先辈郭守敬是我国元代著名的天文学家、数学家、水利工程学家，他对高等数学、球面几何、三角都有很高的造诣，生活在这种家庭环境中的郭伯玉，从小就喜爱数学，尤其对简便、快捷的珠算，更引起他研究的兴趣，他在珠算研究上的成就是巨大的，清代著名数学家梅文鼎在《古算衍略》中说珠盘之法，始于明初郭伯玉，郭伯玉在珠算之法上的巨大贡献，被世人人称为"珠盘之法"的创制者

In order to simulate the global characteristics of wave propagation in solar chromosphere-corona, by employing a 2-dimensional MHD simulation subjected to a self-consistent non-isothermal, non-uniform initial state in spherical geometry, we study numerically the global propagation process of disturbances initiated by a pressure pulse implemented at the bottom of chromosphere.

在球坐标中一自洽的非等温非均匀等离子体初态下，应用二维理想磁流体动力学全球模拟，对色球底部压力脉冲引起扰动传播的全球问题进行了数值研究。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。