在中子星或黑洞伴星上发生吸积的模型，仍应看成是一个有价值的假说。
The model comprising accretion onto a neutron star or black hole companion must still be considered a favored hypothesis.
为了解释各类黑洞吸积盘系统中观测到的硬X射线发射，也为了完善我们的模型，使之更好地解释X射线天文现象，我们在3.4节引入盘冕。
In order to explain the hard X-rays observed in the BH-disc systems, as well as to make our model more self-consistent, corona is introduced in Sec. 3.4.
着重论述了单黑洞—吸积盘进动模型或盘致进动模型；
The single black hole-accretion disk precession model or disk-driven precession model is discussed carefully;
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