The authors present 5 new observations of the CO(1-0) line emission in planetary nebulae with the 13.

7 m 射電望遠鏡,對5 個行星狀星云給出了新的譜線觀測結果。

Tne binary interactions plny an important role in the formation and shaping ofplanetary nebulae(PNe).

在行星狀星云形成過程中雙星起著非常重要的作用。

Spatially Resolved X-ray Photon Index of the Crab Nebula with Chandra Data;

蟹狀星云Chandra衛(wèi)星觀測數(shù)據(jù)的X射線譜分析

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.

根據(jù)蟹狀星云中γ射線的觀測數(shù)據(jù)擬食譜，對γ射線的輻射機制進行了分析。

Planetary nebulae are a type of isolated gaseous nebulae possessing a fair degree of bilateral symmetry.

行星狀星云是一類孤立的氣體星云，具有相當程度的雙側對稱性。

Planetary nebulae are not as airy and tranquil as their images suggest.

行星狀星云并不如影像中所顯現(xiàn)的那麼飄逸寧靜。

Many objections can be raised to this picture of planetary nebula formation.

形成行星狀星云的這一圖象可能會引起許多異議。

The quality or condition of being nebulous.

星云狀態(tài)星云的性質(zhì)或狀態(tài)

The Collapse of the Molecular Cloud Core in the Formation of the Star and Planet;

恒星與行星的形成過程中的分子云核坍塌

New Gypsophila paniculata Cultivars ‘Yunxing 17’ and ‘Yunxing 23’

滿天星新品種‘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.

彗發(fā)星云狀的發(fā)光云體包括彗核、彗星頭部的重要部分

The Crab Nebula lies about6,500 light-years away in the constellation Taurus.

蟹狀星云距離金牛座大約6,500光年遠。

The spiral nebulae were scratches left by the grinder.

螺旋狀的星云是研磨者所留下的痕跡.

We are talking about the globularity of the planets.

我們在談論行星的球狀。

The smaller Rocky worlds are Mercury, Venus, Earth and Mars. The four huge gas planets are Jupiter, Saturn, Uranus and Neptune.

類地行星是水星、星、球和火星。四類木行星木星、星、王星和海王星。

They are the first cirrus clouds seen on an outer planet.

它們是首次在外行星上發(fā)現(xiàn)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.

實際上,現(xiàn)在我們知道蟹狀星云是超新星爆發(fā)的遺跡,即一個巨大恒星死亡后爆炸的殘屑云。

These unusual celestial bodies are composed of single or multiple nebulous patches, some nearly stellar in appearance.

這些異常天體，由單個或多個星云狀斑組成，有的外形近于恒星。

A natural satellite revolving around a planet.

（行星的）衛(wèi)星圍繞行星運轉(zhuǎn)的天然衛(wèi)星

Of, relating to, or characteristic of a nebula.

星云的關于或類似星云的

The planets of our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

我們太陽系的行星有水星、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.

這八顆經(jīng)典行星分別是：水星、金星、火星、木星、土星、天王星和海王星。