Angular plywood arms wraps a sharp-angled shell comprising a corrugated steel roof and clear plastic sides that allow plenty of light to enter.

角胶合板材料包裹了尖角的外壳，壳体由波纹钢屋顶和透明塑料面构成，让足够的光线进入。

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The round and sharp-angled t wave is remarkable differ from the ECG of the Hypokalemic. So it is the characteristic t wave's change of the congenital heart disease.

圆钝尖角改变与低血钾改变明显不同，易于区分而成为先天性心脏病特征性改变。

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Conclusion the round and sharp-angled t wave is the characteristic change of the congenital heart disease, it is of great value to diagnose the congenital heart disease.

结论圆钝尖角T波改变是先天性心脏病的特征性改变，对先天性心脏病有很高的诊断价值。

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Microsoft had considered multiple PC form factors before settling on Surface, Panay says, and the tablets didn't always have that sharp-angled design: the firm tried curved backs before deciding that the flat surfaces were more reassuring in users' hands.

ENGADGET: Microsoft shows Surface prototypes, teases the tablets that might have been