The different kinds of think accretion disk models, the accretion disk model for ultraviolet excess and the self-gravitating accretion disk model in QSOs axe briefly reviewed.
本文对类星体的各种厚吸积盘模型，紫外超现象的吸积盘模型及自引力吸积盘模型作了简扼评述。
At times, water pollutants or excess ultraviolet radiation may act alone to cause specific problems, such as disfigured bodies and eye or skin abnormalities.
有时，水污染物质或过量的紫外线可能各自造成特定的问题，如身体变形与眼睛或皮肤的病变。
At times, water pollutants or excess ultraviolet radiation may act alone to cause specific problems, such as disfigured bodies and eye or skin abnormalities.
有时，水污染物质或过量的紫外线可能各自造成特定的问题，如身体变形与眼睛或皮肤的病变。
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