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数字光盘是现代信息存储技术的结晶，但当今正在被广泛应用的一次只读（ＲＯＭ）式光盘或一次写入（ＷＯＲＭ）式光盘，由于不能写入或多次写入，所以在应用上存在着不可克服的局限性。而近几年开发出来的可擦重写（ＥＤＡＷ）式光盘就从根本上克服了这种缺陷，理论上可以无数?
Although digital disc is the crystallization of modern information storage technology, there is an application that is widely used today as a write-once or write-once (WORM) optical disc. Insurmountable limitations. In recent years, the erasable and rewritable (EDAW) type optical disc developed fundamentally overcomes this kind of defect, and can theoretically countless?