另一类贫金属星，其质量和表面重力都相对偏小。
One is metal rich and relatively massive with large gravity, while another metal poor with lower mass and surface gravity.
银河系中最年老的恒星表现出一种对氢而言的贫金属性。
The oldest stars in the galaxy exhibit a metal deficiency relative to hydrogen.
利用分量系数公式并结合太阳系元素丰度的最新数据，计算了6 4颗贫金属星的中子俘获元素丰度。
By means of the component coefficient equation and the updated data of abundances of the solar system, we calculate the element abundances of 64 poor-metal stars.
贫金属星的中子俘获元素丰度与恒星的形成和演化密切相关，它为研究星系形成早期的历史背景和化学演化提供了重要信息。
The abundances of neutron-capture elements in metal-poor stars, tightly related to the star formation and evolution, provide important clues to the chemical evolution of the Galaxy.
碳扩散的结果是在紧邻熔合界面的焊缝金属一侧形成高硬度的增碳层，母材金属一侧产生硬度较低的贫碳层。
Carbon migration induces the formation of carbon-enriched layer in the austenitic weld metal and carbon-denuded layer in the Cr-Mo steels base metals.
熔化的固体化合物的质量贫返回到金属洗澡时，与预期的化合物丰富了熔融体部分出院。
The molten mass depleted of solid compounds is returned to the metal bath and the part of the molten mass enriched with the desired compounds is discharged.
金的矿化与富集以富含黄铁矿、贫其他多金属硫化物为特征。
The mineralization and enrichment of gold are characterized by the rich pyrite and poor other polymetallic sulfide.
研究了过渡金属氧化物（TMO ）及其复配物对非壅塞固体火箭冲压发动机铝镁贫氧推进剂燃烧特性的影响。研究发现，氧化铁对提高铝镁贫氧推进剂燃速的作用显著。
The effects of TMOs and their mixtures on the burning rate and the pressure exponent of the aluminum magnesium fuel rich propellant for unchoked ducted rocket are investigated.
研究了过渡金属氧化物（TMO ）及其复配物对非壅塞固体火箭冲压发动机铝镁贫氧推进剂燃烧特性的影响。研究发现，氧化铁对提高铝镁贫氧推进剂燃速的作用显著。
The effects of TMOs and their mixtures on the burning rate and the pressure exponent of the aluminum magnesium fuel rich propellant for unchoked ducted rocket are investigated.
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