正常星系 meaning in English
normal galaxy
Examples
- Other than the active galaxies , supermassive black holes can also be found in the centres of ordinary galaxies . but the mass of the black holes is only at the level of one million solar masses
除了活跃星系外，一般正常星系的核心也有发现超级黑洞，不过这些黑洞的质量只在百万太阳质量的数量级。