实验表明，该双数字水印系统达到了版权和内容保护的目的。

The experiments show that the double digital water - marking system reaches the goal of copyright and content protection.

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最后，在研究单数字水印的基础上，提出了一种基于SVD和DWT的双数字水印算法。

Finally, on the basis of studying single digital watermarking, proposes a double digital algorithm based on SVD and DWT.

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微电脑温度控制器，具有设定、测定温度双数字显示和PID自整定功能，控温精确，可靠。

Intelligent temperature controller is based microprocessor with PID parameters controlling function. Digital display of set and actual temperatures.

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