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1·The application is always available with no interruptions (or at most, imperceptive ones) except for scheduled downtimes for maintenance.

除了预定的维护停机时间，这个应用程序始终保持不间断工作(或者，最多是无影响中断)。

2·Experimental results show that this new algorithm is imperceptive and robust, and has a good performance against the scaling and the local attack.

实验表明该方法水印隐藏性好，鲁棒性较好，抵抗放缩和局部攻击有很好的表现。