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 dihedral corner reflector with wing and fuselage joint of aircraft is a very strong electromagnetic source in a wide angular range.
飞行器翼身接合部构成的二面角反射器是很强的电磁散射源。
The changes in dihedral of front wing and cathedral of rear wing have little effect on longitudinal aerodynamic characteristics but large effect on lateral-directional characteristics.
改变连翼机前翼上反角和后翼下反角对纵向气动特性影响不大，对横向气动特性有明显影响。
The changes in dihedral of front wing and cathedral of rear wing have little effect on longitudinal aerodynamic characteristics but large effect on lateral-directional characteristics.
改变连翼机前翼上反角和后翼下反角对纵向气动特性影响不大，对横向气动特性有明显影响。
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