double cluster
- 双星团：指裸眼可见的疏散星团NGC 869和NGC 884的合称，在英仙座内靠得很近。这两个星团至地球的距离都是7,600光年，总质量至少是20,000太阳质量。它们都很年轻，大约只有1,280万岁。
网络释义专业释义英英释义
... 双重效应 double effect; 双重星团 double cluster; 双重星系 binary galaxy; binary system; double galaxy; ...
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短语
nested double-cluster process 嵌套双聚块模型
PSO-based Double Cluster-Heads Clustering algorithm 双簇头分簇算法
double-slope cluster 倍斜率聚类法
double-threshold cluster 双阈值聚类
double tetrahedral cluster 双四面体簇合物
double slope cluster method 倍斜率聚类法
Double Cluster
- abstract: The Double Cluster (also known as Caldwell 14) is the common name for the naked-eye open clusters NGC 869 and NGC 884 (sometimes designated h Persei and χ Persei, respectively, but those designations would really apply to both clusters and to a visually nearby star
以上来源于: WordNet
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