n.金属性；金属特性

The metallicity of the Andromeda galaxy is significantly higher than that of our own Milky Way.
安德洛美达星系的金属丰度明显高于我们自己的银河。
Observations suggest that stars in the outer regions of galaxies tend to have lower metallicities.
观察表明，星系外缘的恒星往往金属丰度较低。
The metallicity gradient in spiral galaxies is a well-known phenomenon, with the central regions being more enriched.
椭圆旋涡星系的金属梯度是一个已知的现象，中心区域更为富集。
High metallicity is associated with advanced stages of stellar evolution and nucleosynthesis.
高金属丰度与恒星演化的高级阶段和核合成过程有关。
The study of metallicity in ancient stars helps astronomers understand the early formation of galaxies.
研究古代恒星的金属丰度有助于天文学家理解星系的早期形成。
The low metallicity of certain dwarf galaxies indicates they formed earlier in the universe's history.
一些矮星系的低金属丰度表明它们形成于宇宙历史的早期阶段。
A star's metallicity can provide clues about its birthplace within a galaxy.
星星的金属丰度可以揭示它在星系中的诞生地。
The cosmic microwave background radiation supports the theory that galaxies had lower metallicity in the early universe.
宇宙微波背景辐射支持了早期宇宙星系金属丰度较低的理论。
The metallicity of a nebula influences the types of elements that can form within it during a star's birth.
原行星盘的金属丰度影响新生恒星在其诞生过程中形成元素的种类。
Researchers use spectroscopy to measure the metallicity of distant galaxies, providing insights into their chemical composition.
研究人员使用光谱学测量遥远星系的金属丰度，从而了解其化学组成。