nebula
n. 星云；角膜云翳
n.
星云；星云状的星系；
变形
复数：nebulasnebulae
英英释义
nebula[ 'nebjulə ]
n.
a medicinal liquid preparation intended for use in an atomizer
cloudiness of the urine
an immense cloud of gas (mainly hydrogen) and dust in interstellar space
(pathology) a faint cloudy spot on the cornea
词组短语
horsehead nebula[天文]马头星云
orion nebula猎户座星云；猎户星云
planetary nebula行星状星云
reflection nebula反射星云
emission nebula发射星云
双语例句
用作名词(n.)
Fine dust in the nebula reflects the light.
星云中细致的尘埃反射了星光。
You can see nebulae in the clear summer sky.
在晴朗的夏夜可以看到天上的星云。
权威例句
Protoplanet Migration by Nebula Tides ☆Condensation in the primitive solar nebula
The ISO/LWS spectrum of the EGG nebula, AFGL 2688.
Magnetohydrodynamic model of Crab nebula radiation
Aerodynamics of solid bodies in the solar nebula
A Preliminary Study of the Orion Nebula Cluster Structure and Dynamics
Rotation of the Andromeda Nebula from a Spectroscopic Survey of Emission Regions
On the Stellar Population and Star-Forming History of the Orion Nebula Cluster
Structure of the Solar Nebula, Growth and Decay of Magnetic Fields and Effects of Magnetic and Turbulent Viscosities on the Nebula
The rich O II recombination spectrum of the planetary nebula NGC 7009: new observations and atomic data
nebula
nebula: [17] As its form suggests, nebula was originally a Latin word, but it goes back to a prehistoric Indo-European base (*nebh- ‘cloud’) which produced a wide range of other descendants, including German nebel ‘cloud’, Greek néphos ‘cloud’, and Latvian debess ‘sky’. It also got into Old English, as nifol ‘dark’. The Latin word was originally used in English for a sort of ‘cataract’ over the eye, and the presentday astronomical application to a ‘cloud’ of stars did not emerge until the early 18th century. The derivative nebulous [16] is an earlier borrowing.
nebula (n.)
early 15c., nebule "a cloud, mist," from Latin nebula "mist, vapor, fog, smoke, exhalation," figuratively "darkness, obscurity," from PIE *nebh- "cloud" (cognates: Sanskrit nabhas- "vapor, cloud, mists, fog, sky;" Greek nephele, nephos "cloud;" German Nebel "fog;" Old English nifol "dark, gloomy;" Welsh niwl "cloud, fog;" Slavic nebo). Re-borrowed from Latin 1660s in sense of "cataracts in the eye;" astronomical meaning "cloud-like patch in the night sky" first recorded c. 1730. As early as Hershel (1802) astronomers realized that some nebulae were star clusters, but certain distinction of relatively nearby cosmic gas clouds from distant galaxies was not made until 1920s, using the new 100-inch Mt. Wilson telescope.
1. The Great Nebula is a cloud of glowing gas centered on four hot, blue stars located about 1, 500 light-years from the earth.
这个大星云是以离地球大约1500光年的四颗很热的蓝星为中心的发光气体云。
-- 来源 -- 英汉 - 辞典例句
2. A powerful telescope can resolve a nebula into stars.
一架高性能的望远镜能从星云中分辨出星球来。
-- 来源 -- 英汉 - 辞典例句
3. A nebula is really a discrete mass of innumerous stars.
一团星云实际上是无数星体不连续的集合体。
-- 来源 -- 英汉 - 辞典例句
4. The general shape of the average nebula is that of a thin circular disk somewhat thick in the center.
星云最常见的形状是中间较厚边缘较薄的圆盘。
-- 来源 -- 英汉 - 辞典例句
5. Many objections can be raised to this picture of planetary nebula formation.
形成行星状星云的这一图象可能会引起许多异议。
-- 来源 -- 英汉 - 辞典例句
6. The Trifid Nebula itself represents the final phase of star formation.
三叶星云本身代表着恒星形成的最后阶段。
-- 来源 -- 英汉 - 辞典例句
7. We have identified the Crab Nebula as the debris of this explosion.
我们已证明蟹状星云就是这次爆炸的遗迹。
-- 来源 -- 英汉 - 辞典例句
8. These calculations can be compared with the chemical analyses of meteorites in an attempt to ascertain the conditions in the nebula at the time of their formations.
这些计算可与陨星的化学分析相比较，从而推断在它们形成时星云中的条件。
-- 来源 -- 英汉 - 辞典例句
9. The temperature of the nebula in some places may never have risen high enough to evaporate pre-existing micron-sized interstellar grains.
星云中某些地方的温度可能从未升高到足以使原有的微米级大小的星际尘埃变成气体。
-- 来源 -- 英汉 - 辞典例句
10. gaseous nebula
气体星云
-- 来源 -- 英汉 - 短句参考
nebula
