查询词典 planetary nebula

Covering an area surrounding the dusty Keyhole Nebula (NGC 3324) near picture center, the image spans about 40 light-years within the larger Carina Nebula at an estimated distance of 7,500 light-years, Like the more northerly Orion Nebula, the bright Carina Nebula is easily visible to the naked-eye.

船底座星云的推算距离为是7，500光年，所以这幅影像呈现了船底座星云约四十光年的区域。

Caption:: The Trifid nebula (Messier 20), named after its three-lobed appearance caused by dusy lanes crossing its bright core, is a combination of an emission nebula and a reflection nebula.

这是位於人马座的三叶星云，又名三裂星云和 M20，这个名源自它的外观，好像由三块不同的东西所构成似的。

Just below the Southern Cross on the far left is the dark Coal Sack Nebula, and the bright nebula on the far right is the Carina Nebula.

南十字座左下方的是黑暗的煤袋星云，而最右侧明亮的星云是船底座星云。

Explanation: Appropriately nicknamed "the Skull Nebula", planetary nebula NGC 246 really does surround a dying star some 1,600 light-years away in the constellation Cetus.

解释："骷髅星云"，形容行星状星云NGC 246的一个很合适的绰号，围绕着大约1600光年之外的鲸鱼座座的一颗正在死亡的恒星。

Appropriately nicknamed "the Skull Nebula", planetary nebula NGC 246 really does surround a dying star some 1,600 light-years away in the constellation Cetus.

位在鲸鱼座离我们约1，600光年远的行星状星云NGC 246，有个骷髅星云的贴切昵称，因为它中心的确有一颗滨临死亡的恒星。

The spoke features seem to indicate that the Helix Nebula is itself an old and evolved planetary nebula.

这种辐条结构，似乎表明螺旋星云本身是一个老切高度演化的行星状星云。

This Hubble Space Telescope images show Cat's Eye Nebula is the most complicated "planetary nebula" is one in Draco.

这张哈勃太空望远镜拍摄的图片，显示猫眼星云是最复杂的&行星星云&之一，位于天龙座。

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。

This paper consider centrifugal force and coriolis force for ideas of Planetary LabCD Valve Model and Single Point Fluid Separation Model, then the relation of critical rotation speed and planetary angle is linear which control parameter of critical rotation speeding in the Planetary LabCD Valve Model and compare with James Lee theory, and define γR in SPFS Valve Model to show the relation of the low rotation speed is linear and is fixed where the high rotation speed for utilizes any rotation speed.

本论文考虑离心力与科氏力之影响，且提出行星式碟片阀门模式与单点流体分离阀门模式两模式，其中行星式碟片阀门模式，其临界转速与行星角之大小近於线性变化，可当於控制阀门之临界转速之设计参数，且比较在阀门设计上考虑行星角来控制阀门临界转速与James Lee之阀门临界转速理论可以得知，从吾人所提出行星式碟片阀门模式可以得到与实验结果相同的趋势。

It also analyzes the feature and development of semi-finish grinding and finish grinding by roller press.

同时进行了辊压机半终粉磨和终粉磨系统的特点和发展分析。

When I got there, water was dripping slowly from the ceiling and forming a pool on the floor.

当我到那里的时候，水是慢慢地从天花板滴而且形成在地板上的一个池。