Experimental results demonstrate that the proposed algorithm is more tamper resistant than general spread spectrum watermark algorithm and the false detection rate is decreased considerably.
实验表明，该算法有效降低了检测错误的概率，显著地提高了扩频水印的抗攻击能力。
They are highly malignant and demonstrate local invasion as well as distant spread through the CSF.
具有高度恶性，局部浸润，并随脑积液远处播散。
High positive rates of H5 and H9 might demonstrate the possibilities that AIV of H5 and H9 widely spread in wild in this period.
该时期野生鸟类中普遍出现H5和H9的高阳性率现象，可能存在H5和H9在野外的大范围传播情况。
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