Conclusions MCI is the boundary between AD and normal aging, and its cognitive impairment has changes similar to the early stage of AD.

结论以本研究设立的诊断标准所确立的MCI，其认知功能介于痴呆和正常认知老年人之间，并与早期AD具有相似的认知功能改变。

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The effect of aging treatment on corrosion sensitivity is closely related to S' phase, the phase precipitated in grain boundary and precipitate-free zone.

在时效过程中S’析出相、晶界析出相和无沉淀析出带的变化是影响合金预拉伸厚板腐蚀行为的主因。

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