优化材料性能参数和自旋阀巨磁电阻磁头的结构参数是微磁器件实用化的关键。

Optimizing the materials properties and structure parameters of giant magneto resistance (GMR) spin valve head is of key importance to application.

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结果：两组均能改善脑梗死患者脑血流图、血液流变学和血脂的多项指标参数，但巨针组优于毫针组（P< 0 0 5 ）。

Results Rheoencephalogram, hemorheo logy and blood lipids were improved in the two groups, with the big needle group better than the filiform needle group ( P< 0 05).

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