洪水

The intrinsic coercive force of annealed powders increase.

退火后的内禀矫顽力越高。

To improve the security of watermarking system, the shuffle algorithm is also adopted to randomize the watermark sequence to increase the attack difficulty.

为提高水印系统的安全性，在上述除第一种之外的所有算法中都利用了shuffle算法对水印序列进行置乱，增大了攻击的难度。