ugm
- 网络模型;玛达大学;户创建市场;无收缩高强灌浆材料
![ugm](../cache/637447.jpg)
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We present a new anti-counterfeiting technology of social security card based on UGM and digital watermarking .
提出了一种基于UGM模型和数字水印的社保卡防伪技术。
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He Nagatomo 's UGM scheme is extended into a double form , by which the exact solutions of the stationary axisymmetric vacumm gravitational field equations can be obtained . Some new results are given .
将Nagatomo的UGM方法推广为二重形式,用以求出稳态轴对称真空引力场方程的精确解.给出了一些新结果。