您要查找的是不是:
- acive galaxies 流动星系
- The assemblage of all galaxies; the entire physical universe. 总星系所有星系的总称; 整个自然宇宙
- Other galaxies are placed irregularly in space. 其它星系不规则地位于太空中。
- Galaxies tend to clump together in clusters. 星系往往聚集形成星团。
- We find several at the centers of some galaxies. 我们在不少星系中心都找到这种黑洞。
- Galaxies tend to occur in groups known as clusters. 星系倾向于发生在小组以群著名。
- Many of the galaxies are ablaze with star birth. 许多星系随着恒星的诞生而点燃生命之火。
- Why do many galaxies appear as spirals? 为什么众多星系都显示为螺旋形状?
- Can Ring Galaxies Form by Gravitational Collapse? 引力坍缩能形成环星系吗?
- There is a curious feature in the spectra of spiral galaxies. 在旋涡星系的光谱中有一种奇妙的特征。
- We haven't even begun to map the many galaxies that we know exist. 我们甚至对我们已知的星系都没进行勘测呢。
- A third inconsistency has to do with the number of dwarf galaxies. 第三项矛盾与矮星系的数目有关。
- More homely galaxies, too, may be controlled by their starbursts. 较为普通的星系,同样有可能受制于星群爆发。
- The assemblage of all galaxies;the entire physical universe. 总星系所有星系的总称;整个自然宇宙
- The next question is how many galaxies are there in the universe? 第二个问题是:宇宙里有多少个星河?
- Most galaxies occur in pairs or in small multiple groups. 大多数星系成双或几个成一小群。
- The universe as a whole contains billions of comparable galaxies. 整个宇宙,包含亿万个可以比拟的银河系。
- They reported that younger galaxies should be significantly bluer. 据他们报道,较年轻的星系颜色应该显著地偏兰。
- The second error stems from the uncertain distance of galaxies. 第二个误差,也是最重要的一个误差,就是距离量度的不确定。
- Still other galaxies are irregular, with no definite form. 仍然其它星系是不规则,没有确定形式。