They have big cheekbones, big mandible angle without double fold, and a low profile nose.
他们希望拥有西方人一样挺拔的鼻子，小巧精致的颧骨和下颌。
Its basic gear tooth profile is double circular arc spiral bevel gear tooth profile.
双圆弧弧齿锥齿轮是将点啮合制圆弧齿轮传动形式运用到锥齿轮上的成功例子。
Its basic gear tooth profile is double circular arc spiral bevel gear tooth profile.
双圆弧弧齿锥齿轮是将点啮合制圆弧齿轮传动形式运用到锥齿轮上的成功例子。
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