Objective To investigate morphological traits in head - face of Miao and Dong nationalities.

目的探讨湖南苗族、侗族头面部人类学特征.

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Results With some liquid surrounded, 3 D could demonstrate of fetals head, face, and limbs.

结果一体化三维探头扫查在一定液体环绕下能很好地显示胎儿体表器官立体形态,及时检出胎儿头 、 面部及肢体畸形.

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The cracks on the head face were caused by inappropriate quenching and grinding processes.

裂纹为淬火裂纹和磨削裂纹,它们由于不恰当的淬火和磨削工艺所引起.

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