The authors present 5 new observations of the CO(1-0) line emission in planetary nebulae with the 13.
7 m 射电望远镜,对5 个行星状星云给出了新的谱线观测结果。
Tne binary interactions plny an important role in the formation and shaping ofplanetary nebulae(PNe).
在行星状星云形成过程中双星起着非常重要的作用。
Spatially Resolved X-ray Photon Index of the Crab Nebula with Chandra Data;
蟹状星云Chandra卫星观测数据的X射线谱分析
The conclusion is that high energy Gamma-ray is the result of inverse-Compton scattering, and Gamma-rays with different energies radiate from different regions in the crab nebula.
根据蟹状星云中γ射线的观测数据拟食谱，对γ射线的辐射机制进行了分析。
Planetary nebulae are a type of isolated gaseous nebulae possessing a fair degree of bilateral symmetry.
行星状星云是一类孤立的气体星云，具有相当程度的双侧对称性。
Planetary nebulae are not as airy and tranquil as their images suggest.
行星状星云并不如影像中所显现的那麽飘逸宁静。
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。
The quality or condition of being nebulous.
星云状态星云的性质或状态
The Collapse of the Molecular Cloud Core in the Formation of the Star and Planet;
恒星与行星的形成过程中的分子云核坍塌
New Gypsophila paniculata Cultivars ‘Yunxing 17’ and ‘Yunxing 23’
满天星新品种‘云星17’和‘云星23’
The nebulous, luminescent cloud containing the nucleus and constituting the major portion of the head of a comet.
彗发星云状的发光云体包括彗核、彗星头部的重要部分
The Crab Nebula lies about6,500 light-years away in the constellation Taurus.
蟹状星云距离金牛座大约6,500光年远。
The spiral nebulae were scratches left by the grinder.
螺旋状的星云是研磨者所留下的痕迹.
We are talking about the globularity of the planets.
我们在谈论行星的球状。
The smaller Rocky worlds are Mercury, Venus, Earth and Mars. The four huge gas planets are Jupiter, Saturn, Uranus and Neptune.
类地行星是水星、星、球和火星。四类木行星木星、星、王星和海王星。
They are the first cirrus clouds seen on an outer planet.
它们是首次在外行星上发现的卷云。
In fact, the cosmic Crab is now known to be a supernova remnant, an expanding cloud of debris from the death explosion of a massive star.
实际上,现在我们知道蟹状星云是超新星爆发的遗迹,即一个巨大恒星死亡后爆炸的残屑云。
These unusual celestial bodies are composed of single or multiple nebulous patches, some nearly stellar in appearance.
这些异常天体，由单个或多个星云状斑组成，有的外形近于恒星。
A natural satellite revolving around a planet.
（行星的）卫星围绕行星运转的天然卫星
Of, relating to, or characteristic of a nebula.
星云的关于或类似星云的
The planets of our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
我们太阳系的行星有水星、金星、地球、火星、木星、土星、天王星、海王星。
The classical planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.
这八颗经典行星分别是：水星、金星、火星、木星、土星、天王星和海王星。