数字版权管理技术可以使电子图书在达到一定期限或使用限制后失效。
Technology known as digital rights management can make e-books unreadable once they have reached a certain time or user limit.
数字版权管理技术可以使电子图书在达到一定期限或使用限制后失效。
Technology known as digital rights management can make e-books unreadable once they have reached a certain time or user limit.
应用推荐