beta point source
... alpha beta standard source 标准源 beta point source 射线点源 ceramic beta source 陶瓷源 ...
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点状射线源 point source
·2,447,543篇论文数据，部分数据来源于NoteExpress
对X射线数据的分析表明，点源与包含有中子星或黑洞(它们正从正常恒星吸走物质)的双星系统成协。
Analysis of the X-ray data shows that the point sources are associated with binary star systems that contain a neutron star or black hole that is pulling matter away from a normal star.
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