星云的

Meditations of evolution increasingly vaster: of the moon invisible in incipient lunation, approaching perigee: of the infinite lattiginous scintillating uncondensed milky way, discernible by daylight by an observer placed at the lower end of a cylindrical vertical shaft 5000 ft deep sunk from the surface towards the centre of the earth: of Sirius 10 lightyears (57,000,000,000,000 miles) distant and in volume 900 times the dimension of our planet: of Arcturus: of the precession of equinoxes: of Orion with belt and sextuple sun theta and nebula in which 100 of our solar systems could be contained: of moribund and of nascent new stars such as Nova in 1901: of our system plunging towards the constellation of Hercules: of the parallax or parallactic drift of socalled fixed stars, in reality evermoving wanderers from immeasurably remote eons to infinitely remote futures in comparison with which the years, threescore and ten, of allotted human life formed a parenthesis of infinitesimal brevity.

347关于宇宙日益扩大进化的冥想：新月期的月亮，即使在近地点也看不见。从地表向地轴挖掘纵深五千英尺的圆筒状垂直轴，一个观察者呆在轴底儿上，就连白昼也辨认得出那漫无止境、网络状、亮光闪闪、非凝结性的银河。天狼距地球十光年（五七、000、000、000、000英里）；体积大于地球九百倍；大角；岁差运动；有着"猎户"腰带、六倍于太阳的"伐二"以及星云的猎户座，星云中能容纳我们的一百个太阳系；死去的和新生的星宿，例如一九0 一年的那颗"新星"我们的太阳系正朝着武仙座冲去；所谓恒星的视差或视差移动，也就是说，实际上恒星是在不断地从无限遥远的太古朝无限遥远的未来移动着。相形之下，人的寿命充其量才七十年，不过是无限短暂的一段插曲而已。

These stars formed about four million years ago from the nebular material and their stellar winds are clearing a hole in the nebula's center, insulated by a layer of dust and hot gas.

这些星星是在约四万年前从星云原料中形成的，而他们的恒星风在星云的中心吹出一个洞，被一层的尘埃与炙热气体所隔离。

These stars formed about four million years ago from the nebular material and their stellar winds are clearing a hole in the nebula's center, insulated by a layer of dust and hot gas.

在大约4百万年前，这些恒星从它周围的星云物质中形成的。它们所发出的恒星风在星云的中心挖出一个空洞，而空洞的边缘有一层由尘埃和炽热气的隔离层。

The picture is dominated by a large, approximately circular feature, which is part of the Keyhole Nebula, named in the 19th century by Sir John Herschel.

此图片是张大的近乎圆形的特写，是钥匙洞星云的一部分。钥匙洞星云这个名字是十九世纪John Herschel命名。

Previously unseen details of a mysterious, complex structure within the Carina Nebula (NGC 3372) are revealed by this image of the 'Keyhole Nebula,' obtained with the Hubble Space Telescope.

哈 勃空间望远镜使我们通过这张钥匙洞星云的图片看见前所未见的细节--神秘的船底座星云（NGC 3372）的复杂结构。

Pictured above is the west end of the Veil Nebula known technically as NGC 6960 but less formally as the Witch 's Broom Nebula.

上面的影像是面纱星云的西端，也被称为NGC6960，通俗的称谓是巫婆的扫帚星云。

But this well-studied example of a planetary nebula, produced near the end of the life of a sun-like star, is now understood to have a surprisingly complex geometry.

但事实并非如此。螺旋星云事实上已经是已被广泛研究的行星状星云的很好的例子。它是类太阳恒星在寿终时所演变成的。

The Hubble Space Telescope captured this image of the Stingray Nebula, the youngest known planetary nebula.

哈勃航天望远镜抓拍了这张魟星云的照片，它是我们所知道的最年轻的行星星云。

The Hubble Space Telescope captured this image of the Stingray Nebula, the youngest known planetary nebula.

哈勃太空望远镜捕捉到了这幅黄貂鱼星云的图像，它是目前已知的最年轻的行星状星云。

The curiously-shaped dust structure occurs in our neighboring Large Magellanic Cloud , in a star forming region very near the expansive Tarantula Nebula .

这奇怪形状的尘埃结构发生在我们周边的大麦哲伦星云，在非常接近巨大蜘蛛星云的一个恒星形成区域内出现。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。