求翻译：1968年Lisitsyn和Chebotaev将吸收介质置于He-Ne激光器的谐振腔中,通过改变腔内损耗、腔的增益或腔的吸收观察到光学双稳性的滞后回线[5]，如图5.1.7所示。是什么意思？

The 1968 lisitsyn and chebotaev absorbing medium placed in he-ne laser cavity by changing the cavity loss, the gain of the cavity or cavities absorption observed optical bistability hysteresis loop [5], in Figure 5.1. 7 below.

1968 Lisitsyn Chebotaev will absorb and built-in media Ne He - in the laser cavity, through changes in the cavity of the loss, gain or cavity of the observed optical absorption of dual-voltage regulator of the hysteresis loop [ 5], as shown in Figure 5.1 .7.

In 1968 Lisitsyn and Chebotaev the absorbing medium will put in the He-Ne laser in the resonant cavity, lost, the cavity gain or the cavity absorption through the change cavity in observes optics bistable hysteresis loop (5), as shown in Figure 5.1.7.

1968 Lisitsyn and Chebotaev will be placed in resonant cavity of the He-Ne laser absorption medium, by changing the gain or loss within the cavity, cavities cavity absorption of optical bistability of hysteresis observed [5], as shown in Figure 5.1.7.

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