| 释义 |
BL Lac object
基本例句
蝎虎BL型天体
When the jet is close to the line of the sight,aBL Lac objectis in the high state and vice versa.高态是喷流方向与观测者视线夹角较小的表现，而低态则是夹角较大的表现。
It is suggested that the orientation of the relativistic jet of aBL Lac objectchanges with the time,and thus cause the variability on long timescale.我们提出活动星系核的相对论性喷流方向会改变，从而导致长期光变； |