为了验证该方法的可靠性，本文对无限空间和半空间中矩形类、椭圆类和半椭圆类平片裂纹问题进行了计算。
To test the reliability of this method, rectangular crack elliptical crack and semi-elliptical crack in infinite space and in semi-infinite space are calculated.
证实用亚椭圆形毛坯制得的盒形件在有效高度，口部平齐度等方面优于其它形状的毛料。
Results show that boxes drawn with para-elliptical blanks are superior to those drawn with other blanks.
证实用亚椭圆形毛坯制得的盒形件在有效高度，口部平齐度等方面优于其它形状的毛料。
Results show that boxes drawn with para-elliptical blanks are superior to those drawn with other blanks.
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