在此基础上，提出了一个基于多重数字水印的数字版权保护管理系统模型，并介绍了其功能和应用。
On this basis, a solution of digital copyright protection management system is provided, together with its function...
那么，他建议，为什么不抛开数字版权管理，出卖不受保护的音乐呢？
So, he suggests, why not do away with DRM and sell music unprotected?
然而，由于苹果公司采用了封闭的、非标准的技术来实施版权保护(被称为数字版权管理)，其成长性受到了局限。
However, because Apple USES closed, non-standard technology for its copy protection (known as Digital Rights Management), the growth is seen as limited.
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