查询词典 planetary nebula

Explanation: This gorgeous celestial vista is centered on one of the Milky Way's own planetary nebulae, M57, the famous Ring Nebula.

说明：这幅美丽的天文景观，主角是我们银河系的著名行星状星云M57；别名为环状星云。

This image from the Hubble Space Telescope reveals theCat's Eye Nebula to be one of the most complex planetary nebulae known.

这张来自哈伯太空望远镜的影像，透露出猫眼星云是现知结构最复杂的行星状星云之一。

This famous object is a so-called planetary nebula that represents a phase of stellar evolution that the Sun should experience several billion years from now.

这个著名的天体之所以被叫做行星状星云是因为其代表了一个行星进化的阶段，就好比太阳形成至今几十亿年间所经历过的。

At the end of its life, a star with a mass less than eight times that of the Sun will blow its outer layers away, giving rise to a planetary nebula.

一个质量少于太阳8倍的恒星，在其演化的最后时期，将褪去其外层气壳，并形成行星状星云。

The colorful glowing shroud is called a planetary nebula.

这个色彩丰富的笼罩物被行星状星云。

NGC 1300is one of the galaxies of Eridan, a planetary nebula located 85 million lightyears from Earth.

NGC 1300是距离地球8500万光年的波江座内众多星系之一。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。