日冕

The main conclusions are as follows.(1) In Cartesian coordinates no catastrophe occurs in the magnetic flux rope system embedded in closed background fields, whereas in spherical coordinates, the system exhibits a catastrophic behavior.

主要结论如下：（1）在直角坐标下，闭合背景场中的磁绳系统不会发生災变；在球坐标下，日冕磁绳系统存在灾变现象。

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。

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。

The evolution of the half-peak width of the relative density increment pulse with respect to slow wave also demonstrates the close relation to Δp. Its minimum w〓 decreases with the increase of Δp, which means, slow wave will steepen with the enhancement of Δp and may evolve into slow shock eventually. Numerical results also indicate that the propagation velocity of fast and slow wave increase when Δp increases.

对强扰动情形(Δp＝5)，通过考察相关物理量的径向分布，并借助于对物理量沿波动阵面法向分布的讨论，可以初步判断出由强扰动所造成的慢模磁声波在传播过程中逐渐陡变而演化为慢激波，慢激波在进入日冕前已在色球层中形成，并在此后的传播过程中始终保持这一性质。

Others believe it was a burial place or perhaps even a giant sundial to tell the time.

还有一些人认为这是殡葬之地，甚至还可能是一块巨大的日冕，用来显示时间。

Chinese painting method is used to form an art that coincides with human thinking. The picture of the sun includes sun's spot, photosphere, sunglow, showing the activities and passion of the sun.

运用中国画写意之法泼彩、晕染、构成、描绘一幅与人类思维相映合，包孕太阳耀斑、黑子、光球、日冕、日珥等诸多运动表像充满激情的太阳图画。

Further, an eclipse expedition is so much less expensive than any space instrument that, even allowing for equipment and weather failures, total eclipse expeditions are a relatively inexpensive way to obtain a variety of chromospheric and coronal information.

进一步说，一个日蚀的探索的项目比其他空间项目要便宜很多，甚至可以弥补天气预报的不足，整个日蚀探索是一个相对便宜的方式去获得一系列的日冕信息。

Comparing the SXR and microwave data with the optical data leads to the following scenario: the corona has been already heated to some extent before flare onset, and in the first two minutes of the impulsive phase, heat conduction was the main source or, at least, a competitive source, for chromospheric heating.

把软X射线和微波资料与光学资料比较研究，我们得到如下图象：在耀斑触发前，日冕已经加热到一定程度；在脉冲相的前两分钟里，热传导是色球加热的主要的或至少是极富竞争力的机制。

The VLA has been used to discover water on planet Mercury, radio-bright coronae around ordinary stars, micro-quasars in our Galaxy, gravitationally-induced Einstein rings around distant galaxies, and radio counterparts to cosmologically distant gamma-ray bursts.

科学家已藉由VLA发现水星上的水、正常恒星周围会辐射出明亮电波的日冕、银河系中的微类星体、遥远星系周围经重力作用产生的爱因斯坦环、以及遥远伽玛线爆发的电波同位对照影像。

Low- protons can be efficiently heated by the enhanced Alfvén waves. And this efficient heating process is attributed to nonresonant wave-particle scattering that leads to randomize protons motion.

本文的研究重点是日冕加热过程的准线性动理学，即低的质子能被阿尔芬波有效加热的问题，这一有效加热主要是由于波粒非共振散射使粒子运动无规化而实现的。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失