球地

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。

In order to endure certain external pressure and seal well, the stainless steel spherical shell is designed and manufactured.

为了能承受一定的外部压力并很好地实现密封，设计并采用粘性介质压力成形工艺制造了不锈钢球壳阀芯。

At the same time,MB could decrease the spherulite size and the crystallization degree of polypropylene.

结果表明，成核剂MB较好地改善了聚丙烯的力学性能以及熔体流动性能，降低了聚丙烯球晶尺寸。

Based on them, we calculated precisely some enegy levels of P-wave and D-wave of a helium atom, presented and proved the general interdimensional degeneracies for a quantum N-body system, derived the general spherical spinor functions and the exact solution to the Dirac equation for the hydrogen atom, and proved uniformly the Levinson theorem for the Dirac equation in D-dimensions.

在此基础上，我们精确计算了氦原子P波和D波若干较低能级，建立和证明了量子N体系统不同维数状态间最普遍的简并，推导出任意 D 维空间广义球旋函数和Dirac方程氢原子的精确解，统一地提出和证明了任意 D维空间Dirac方程Levinson定理的一般形式。

In a nutshell, it is designed to render a "Ball and Stick" model for dendrimers (highly branched moleecules with regular repeating patterns).

概括地说，它的设计呈现一个"球棒"的树枝状模型（高度支定期重复模式分子）。

The objective evaluation of fabric pilling grade based on tangential light projected image using computer vision is studied in this thesis.

本文对基于切面光照投影图像的织物起球等级的计算机视觉评定进行了系统地研究。

The method helps promote the teaching quality by increasing exercise load,training the will of the students and inspiring their interest.

它可以连续不断地供送不同落点、不同旋转、不同速度和不同力量的球，训练中可以加大训练的密度和强度，提高训练效果。

A tee placed in or on the surface of the teeing ground, or

插入地面内或放置在地面上的球座上，或

Afterwards, using the spherical tensor form of many-electron atom Hamilton and the irreducible tensor theory, the relativistic and fine-structure energy correction to the non-relativistic energy of Boron-like atoms in the ground and the first excited states have been further investigated. A theoretically analytic way has been given as to the calculation of all the radial integrations and spin summations, which concern interactions such as orbit-orbit, spin-orbit, spin-spin and spin-other-orbit. Therefore, the whole process of calculating the many- electron atom energy structures has been explicitly revealed and the results are relatively precise and satisfactory.

在此基础上，利用多电子原子哈密顿算符的球张量形式和不可约张量理论，进一步研究了类硼离子基态和第一激发态非相对论能级的相对论修正和精细结构，给出了轨道-轨道、自旋-轨道、自旋-自旋、自旋-其它轨道等相互作用所涉及的所有角向积分和自旋求和的解析计算方法，清晰地展示了多电子原子结构计算的过程，得到了较为精确的理论计算结果。

Then she stands up and throw the ball into the air several times.

她唱着歌。然后站起来，一次又一次地把金球抛到空中。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。