DIHEDRAL, the Angle between the wing reference plane and water line.
上反角，机翼基准面与水线之间的夹角。
The results achieved by FEM were stable, and irrelevant to coordinate system and reference plane.
用FEM进行人颅颌面生长发育研究，其结果是恒定的，与坐标系的选择和参照平面无关。
The results achieved by FEM were stable, and irrelevant to coordinate system and reference plane.
用FEM进行人颅颌面生长发育研究，其结果是恒定的，与坐标系的选择和参照平面无关。
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