在几乎所有的情况下，却使用钝的面不是尖的后缘。
In almost all cases, blunt rather than sharp trailing edges are used.
树干和分枝通常没有不定的菜芽；鳞脐平的或钝尖。
Trunk and branches usually without adventitious sprouts; umbo flat or blunt.
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。
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.
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