| 摘要 |
A multilayer optical disc including a first recording layer, corresponding to a BD disc and provided with a permeable layer having a thickness of 0.1 mm, formed on one surface of the disc and a second recording layer, corresponding to an AOD disc and provided with a permeable layer having a thickness of 0.6 mm, formed on the other surface of the disc, thereby having compatibility such that the multilayer optical disc is used by optical disc drives for different optical systems.
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