_______ is an imaginary straight line drawn through an airfoil from the leading edge to the trailing edge.
A.Camber of an airfoil
B.Leading edge
C.Trailing edge
D.Chord line
正确答案是D
_______ is an imaginary straight line drawn through an airfoil from the leading edge to the trailing edge.
A.Camber of an airfoil
B.Leading edge
C.Trailing edge
D.Chord line
正确答案是D